8th grade science experiments for science fair

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75 Science Fair Projects for 8th Graders

Are you looking for an intriguing eighth grade science fair project? We've got you covered with this carefully selected list of science fair projects specifically for eighth graders.

8th Grade Science Fair Project FAQ

What are some easy 8th grade science fair projects.

Each one of these easy science fair projects is ideal for eighth grade science students to learn important scientific concepts using readily available materials. These are terrific project ideas to get 8th grade students interested in science and have fun doing it!

Static Electricity: What's Attracting?

The Effect of Temperature on Fingerprints

Soap and Surface Tension

Bicycle Helmet Shock Absorption

Glowing in the Dark

Growing Plants from Fragmentation

Extracting DNA from Onions

Temperature and Solubility

Viewing Sunspots

Bacteria on Chopping Boards

Science fair project details right above the FAQ!

What is the best 8th grade science project ever?

We think the Extracting DNA from Onions science fair project is awesome for middle school students! This science project aims to demystify DNA by showing how easy it is to extract from onions and what DNA looks like when it's outside of the cell. It's a classic science experiment to learn about DNA and how DNA can be extracted from many kinds of cells. Check out the video on the project page where DNA is extracted from strawberries too! What other fruits and vegetables can you extract DNA from?

If you're looking for more 8th grade science projects, check out the 8th grade science fair projects at the top of this page! 

Check out more Best Science Fair Projects →

What are some cool 8th grade science fair projects?

Get ready to be amazed by these super cool science projects for 8th graders! With just a few common items, get ready for have tons of fun with a cool science fair project!

Soap Bubbles in Carbon Dioxide

Exploring Cave Formations

Busting Acne Bacteria

What are 5 testable questions for 8th grade?

A testable question is a question that we can answer through a science experiment. To do this, we do a control science experiment, then we change one thing in the experiment to see how it affects what happens. This is how we can discover the answer to our question! Eighth grade science students can use the following testable questions for a science fair project.

Do detergents affect plant growth?

Can drink and food taste different just by changing its color?

Does the color of light affect photosynthesis?

Does temperature affect seed sprouting?

What makes popcorn pop?

Here are more testable questions along with their science projects →

What are the top 10 science projects for 8th grade?

These are our top 10 science projects for 8th grade, with projects from Biology, Chemistry, Physics, Engineering and Environmental Science. These projects can be used as science fair project ideas or as a fun experiment to explore different areas of science!

Testing Fabric Types for Water Resistance

The Greenhouse Effect

Science project details right above the FAQ!

Can I do a 8th grade science fair project in a day?

Yes! Quick experiments or making a model can be a great option for a science fair project! Since you're short on time, they all use readily available materials. Here are quick science fair project ideas to get you started.

The Solar System: See it in the correct scale!

Create your own solar system model to scale on the sidewalk and take a walk through space! Solar System Scale Model on the Sidewalk

Chromatography reaction: Separating out colors!

Have you ever wondered why leaves change color in the fall? Let's find out by using chromatography to separate the colors of a green leaf! Uncovering Fall Colors

Heat reactions: Heat speeds things up!

Does the temperature of a room affect how quickly a candle burns? Burn Rate of a Candle

What are some hands-on ways to find inspiration for my science fair project?

There may be free admission days or free passes to a science museum near you! Check your local library for free museum passes, nearby science museums for free entrance days and your credit card for offers.

Find a science museum near you and prepare to be awed by all that you can learn there! I always learn something new and am inspired whenever I go to a science museum!

How do I start a science fair project?

What should I do after I have a science fair project idea?

How do I make a science fair board?

What is the scientific method?

What is the engineering design process?

Where can I find a science fair competition?

The www Virtual Library: Science Fairs website also has a collection of science fairs from all over the world, as well as national, state, regional, local, and virtual competitions!

32 Exciting 8th Grade Science Fair Project Ideas

Welcome to the world of scientific exploration! The 8th grade science fair is an exciting opportunity for you to showcase your curiosity and creativity while delving into the fascinating realm of science.

In this crucial stage of your academic journey, you have the chance to select a project that not only interests you but also contributes to our understanding of the world around us.

Whether you’re passionate about biology, chemistry, physics, or any other scientific discipline, this is your chance to ask questions, conduct experiments, and make discoveries.

We will explore some intriguing 8th grade science fair project ideas to inspire your scientific journey and help you embark on an exciting research adventure.

Solar-Powered Devices :

Investigate the efficiency of different materials in harnessing solar energy to power everyday devices. You can build small solar panels using various materials like glass, plastic, or aluminum foil and measure their energy output. This project will not only promote sustainable energy but also give you insight into the world of renewable resources.

The Impact of Music on Plant Growth :

Explore the effects of music on the growth of plants. Set up an experiment where you expose plants to different genres of music and monitor their growth over time. This project delves into biology and psychology, as you can research how sound vibrations affect plant growth and the potential benefits of music therapy.

Water Purification Techniques :

Test and compare various water purification methods, such as filtration, distillation, and chemical treatments, to determine which one is the most effective in removing contaminants. This project addresses important environmental and health concerns, providing valuable insights into the purification of drinking water. Related: 100 Helpful Science Fair Project Questions

The Science Behind Slime :

Dive into the world of chemistry by examining the properties and behavior of slime. You can experiment with different slime recipes, altering ingredients like borax, glue, and water to create various textures and consistencies. Investigate the chemical reactions at play and the impact of these variations on the final product.

The Physics of Roller Coasters :

Design and build a small-scale roller coaster to demonstrate key physics concepts such as potential and kinetic energy, friction, and gravity. Test different factors like track height and loop size to understand how they influence the coaster’s speed and safety. This project combines engineering and physics principles, making it both educational and thrilling.

Microbial Mystery :

Investigate the microbial diversity in different environments. Collect samples from various locations, such as soil, water, or even your own hands, and use petri dishes to culture the microorganisms. You can then examine and identify the types of bacteria or fungi present. This project provides insights into microbiology and the importance of microbial communities in ecosystems.

Wind Turbine Efficiency :

Explore the efficiency of wind turbines in generating electricity. Design and build small-scale wind turbines using different blade designs and materials. Measure and compare their power output under varying wind conditions. This project delves into renewable energy sources and engineering principles.

Magnetic Levitation :

Investigate the principles of magnetic levitation (maglev) and build a simple maglev system. Explore how magnets and magnetic fields can be used to make objects levitate and move without friction. This project combines physics and engineering concepts, offering a glimpse into cutting-edge transportation technology.

Candle Burning and Oxygen Consumption :

Study the relationship between the burning of candles and the consumption of oxygen. Design an experiment to measure the amount of oxygen consumed when candles of different sizes and compositions burn. This project ties chemistry and biology together, exploring combustion and its effects on the environment.

Food Preservation Methods :

Test various food preservation methods like canning, drying, and refrigeration to determine which is most effective in preventing food spoilage. You can use different types of food items and monitor their freshness over time. This project is not only relevant to everyday life but also provides insights into food science and microbiology. Related: 20 Exciting First Day of School Science Activities

Effect of Smartphone Usage on Sleep Patterns :

Investigate the impact of smartphone usage before bedtime on sleep quality and duration. Conduct surveys and collect data on participants’ sleep patterns and smartphone usage habits. Analyze the correlation between screen time and sleep disturbances, shedding light on the effects of technology on our health.

Water pH and Plant Health :

Explore how varying levels of water pH affect the growth and health of plants. Create a series of solutions with different pH levels and water plants with them. Monitor the plants’ growth, appearance, and overall health over time. This project combines chemistry and biology, illustrating the importance of pH in agriculture.

The Physics of Paper Airplanes:

Explore the principles of aerodynamics by designing and testing different paper airplane designs. Investigate how factors like wing shape, size, and weight distribution affect flight distance and stability. This project combines physics and engineering, offering a fun and hands-on approach to understanding flight.

The Science of Chocolate :

Dive into the world of food science by examining the properties of chocolate. Investigate how temperature and ingredients affect the melting point, texture, and taste of chocolate. This project allows you to explore chemistry and culinary arts while satisfying your sweet tooth.

Electromagnetic Fields and Plant Growth :

Explore the effects of electromagnetic fields (EMFs) on plant growth. Set up an experiment where plants are exposed to various levels of EMFs generated by common household devices like microwaves or cell phones. Monitor the plants’ growth and health to determine if EMFs have any noticeable impact. This project delves into physics and biology, addressing concerns about the potential effects of EMFs on the environment.

The Effect of Different Soil Types on Plant Growth :

Investigate how various soil types (e.g., clay, sand, loam) affect the growth and health of plants. Plant the same type of seeds in different soil samples and monitor their growth over time. Analyze the role of soil composition in plant development and nutrient availability.

Comparing Biodegradable and Non-Biodegradable Plastics :

Study the decomposition rates of biodegradable and non-biodegradable plastics in different environments. Create controlled experiments to measure how long it takes for each type of plastic to break down under various conditions (e.g., sunlight, water, soil). This project addresses environmental concerns and sustainability.

The Relationship Between Exercise and Heart Rate :

Explore the connection between physical activity and heart rate. Design an experiment in which participants engage in different types and intensities of exercise while monitoring their heart rates. Analyze how exercise impacts heart rate and overall cardiovascular health.

The Chemistry of Food Coloring :

Investigate the behavior of food coloring in different liquids, such as water, oil, and milk. Explore how temperature and pH levels affect the dispersion and mixing of food coloring. This project allows you to delve into chemistry and food science while creating colorful displays.

Astronomy: Tracking Celestial Events :

Study celestial events such as lunar phases, solar eclipses, or meteor showers. Create a project that involves observing and documenting these events over a period of time. Learn about astronomy, the movement of celestial bodies, and how they impact our planet.

Water Quality and Aquatic Ecosystems :

Investigate the impact of different pollutants on water quality and aquatic ecosystems. Collect water samples from various sources (e.g., ponds, rivers, or streams) and test for parameters like pH, dissolved oxygen, and nutrient levels. Analyze the data to understand the health of aquatic environments and the effects of pollution.

Sound Waves and Musical Instruments :

Explore the physics of sound by examining how different musical instruments produce distinct tones. Create a project that investigates the relationship between factors like instrument shape, materials, and tension on the pitch and quality of sounds produced. This project combines physics and music appreciation.

The Science of Soap Bubbles :

Delve into the world of chemistry and surface tension by studying soap bubbles. Experiment with different soap solutions and investigate how additives like glycerin or sugar affect bubble formation, size, and longevity. Explore the scientific principles behind the colorful patterns seen in soap bubbles.

Weather Patterns and Climate Change :

Analyze weather data over an extended period to identify trends and potential impacts of climate change in your region. Gather information on temperature, precipitation, and extreme weather events. Present your findings to raise awareness about climate science and its relevance.

The Impact of Fertilizers on Plant Growth :

Conduct an experiment to determine how various types of fertilizers affect plant growth and health. Use different fertilizers with varying nutrient compositions and apply them to plants. Monitor and measure the growth and overall condition of the plants to draw conclusions about the effectiveness and environmental impact of fertilizers.

The Effect of Temperature on Battery Life :

Investigate how temperature impacts the performance of batteries. Set up an experiment where you test the lifespan and voltage output of batteries in different temperature conditions, ranging from hot to cold. This project delves into both physics and engineering, with real-world applications in electronics.

Antibacterial Properties of Natural Substances :

Explore the antibacterial properties of common natural substances, such as honey, garlic, or vinegar. Create cultures of bacteria and test the effectiveness of these substances in inhibiting bacterial growth. This project combines biology and health science, addressing the potential uses of natural remedies.

Static Electricity and Its Applications :

Study the principles of static electricity and its practical applications. Build various electrostatic generators and explore how they can be used for charging objects, such as the electrophorus or the Van de Graaff generator. This project combines physics and engineering, demonstrating the power of static electricity.

The Impact of Soil Erosion on Landscapes :

Investigate the effects of soil erosion on different types of landscapes. Create simulated erosion conditions and observe how soil erosion affects terrain, vegetation, and water quality. Analyze the importance of soil conservation and erosion control methods in environmental science.

Comparing LED and Incandescent Light Bulbs :

Explore the efficiency and energy consumption of LED and incandescent light bulbs. Set up experiments to measure factors such as brightness, heat generation, and energy usage for each type of bulb. This project delves into physics and energy conservation, showcasing the advantages of energy-efficient lighting. Related: 20 Fun Nerf Gun Science Experiments

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Sohaib Hasan Shah

Sohaib's journey includes 10+ years of teaching and counseling experience at BCSS School in elementary and middle schools, coupled with a BBA (Hons) with a minor in Educational Psychology from Curtin University (Australia) . In his free time, he cherishes quality moments with his family, reveling in the joys and challenges of parenthood. His three daughters have not only enriched his personal life but also deepened his understanding of the importance of effective education and communication, spurring him to make a meaningful impact in the world of education.

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Top 99+ Science Fair Project Ideas for 8th Grade Students

Looking for science fair project ideas for 8th grade students? Discover captivating experiments tailored for 8th graders, igniting curiosity and showcasing scientific skills.

Are you prepared to turn your curiosity into scientific magic and have an absolute blast along the way? Grab your favorite snack (how about some brain fuel?), get comfy, and let’s dive into a world of super cool projects that will make your science fair experience unforgettable.

Are you feeling the excitement? Because I’m pumped up and ready to rock this science fair with you! Let’s make it happen!

Table of Contents

Importance of Science Fair Project Ideas for 8th Grade

Check out the importance of science fair project ideas for 8th grade:-

Messy Science Playdates

Imagine 8th-grade science fair projects as the ultimate playdate with science. No dull lectures, just hands-on experiments – it’s like dipping your toes into a pool of curiosity and making a splash!

Chase Your Curiosity Trail

Think of these projects as treasure hunts for your questions. Instead of sticking to textbooks, 8th graders get to be the explorers of their own curiosity trails. It’s like following a trail of wonders and discovering the secrets of the scientific jungle.

Mad Scientist Vibes

Ever wanted to be a mad scientist in a lab coat? Well, now’s the chance! Science fair projects are like your personal laboratory where you can mix, create, and let loose your inner mad scientist – minus the evil laugh (unless you want to add that too!).

Skills Buffet for Life

These projects aren’t just adding points to your science scoreboard; they’re building a whole set of life skills. From tackling puzzles to working in a team, 8th graders are gearing up with skills that will turn them into all-around rockstars – both inside and outside the classroom.

So, whether you’re causing mini-explosions in the kitchen or decoding the mysteries of the backyard, 8th-grade science fair projects are your VIP passes to a world where learning is an adventure, science is a playdate, and curiosity is your compass!

How do I Get Started with a Science Fair Project? 

Hey there, budding scientist! Ready to rock your science fair project? Here’s the lowdown to kickstart your journey:

• Follow Your Passion: What gets you pumped? Think about what sparks your interest in science. Start from there!
• Zoom In: Now, hone in on something specific. Choose a question or problem that makes you go, “Hmm, I wonder!”
• Dive into Research: Time to do a little detective work! Hit the books, surf the web—soak up all that juicy info about your topic.
• Make a Guess: Take a stab at it! What do you think might happen? Trust your gut and make a hypothesis.
• Plan Your Experiment: Map out your game plan. What materials do you need? How will you set up your experiment?
• Gather Your Gear: Raid your kitchen, scavenge your closet—grab whatever you need. Get creative and use what you have!
• Test it Out: Ready, set, go! Dive into your experiment. Follow your plan, jot down observations, and don’t forget to have fun!
• Check Out the Results: What did you discover? Take a peek at your data. Look for any surprises or interesting patterns.
• Share Your Story: Spread the word! Practice explaining your project and get ready to blow some minds at the science fair.

And there you have it—your recipe for science fair success! Now go on, get out there, and let your inner scientist shine!

Also Read: Service Project Ideas for High School

List of Science Fair Project Ideas for 8th Grade Students

Here is a complete list of science fair project ideas for 8th grade students: 

• Experiment with different types of music to see how they affect heart rates.
• Grow veggies in your backyard and see how they respond to sunlight and water.
• Test natural bug repellents to keep mosquitoes at bay.
• Watch ants to see what foods they prefer.
• Check if caffeine affects sleep in mice.
• See how soil types impact seed growth.
• Hatch chicken eggs at different temperatures.
• Test natural vs. chemical cleaners on stains.
• Try different diets on fruit flies.
• Check if packaging affects food freshness.
• Test the acid levels of popular drinks and their effects on teeth.
• See which cleaner is best at removing stains.
• Bake bread and study the chemistry behind it.
• Rust metal in different temperatures.
• Learn about cooking oils’ chemical compositions.
• Boil water with different salt levels.
• Grow crystals with different pH levels.
• Study soap or vinegar’s chemical makeup.
• Check fruit color vs. vitamin C content.
• Investigate pH changes in flavored water.
• Bounce balls of different materials.
• Swing pendulums of various lengths.
• Test paper airplanes in windy conditions.
• Roll balls down ramps at different angles.
• Play with magnets to see their strength.
• Strum guitar strings of different lengths.
• Stretch rubber bands and observe changes.
• Drop objects to measure gravitational pull.
• See how light bulbs’ energy usage varies.
• Push toy cars across different surfaces.

Environmental Science

• Grow plants in polluted vs. clean water.
• Watch how deforestation affects soil.
• Study CO2 levels in urban vs. rural areas.
• Simulate an oil spill and its effects on wildlife.
• Track bird migration during climate changes.
• Examine how cities impact local animals.
• Map how weather affects local ecosystems.
• Experiment with recycling vs. dumping trash.
• Observe litter’s impact on animal behavior.
• Compare algae growth in warm vs. cool water.

Earth Science

• Mimic erosion with different soils.
• Experiment with shadows to study sunlight angles.
• Build models to understand earthquakes.
• Check erosion rates with and without vegetation.
• Simulate volcanic eruptions’ ash clouds.
• Use ice to sculpt landscapes.
• Plant in different soils to see growth.
• Test water quality in clean vs. dirty areas.
• Measure tide patterns with moon phases.
• Study rock weathering in various environments.

Engineering

• Build and break model bridges.
• Test soundproofing materials like egg cartons.
• Design solar panels for optimal sunlight.
• Construct wind turbine blades for efficiency.
• Power toy cars with solar or wind energy.
• Insulate houses for energy savings.
• Make rockets for distance and speed.
• Shape boats for maximum buoyancy.
• Measure bike speed with different gears.
• Create parachutes to slow down falls.

Computer Science

• Model ecosystems with population dynamics.
• Encrypt messages and crack the codes.
• Study social media’s impact on behavior.
• Design video games for player engagement.
• Monitor screen time’s effect on focus.
• Predict weather patterns with algorithms.
• Track smartphone usage for productivity.
• Code robots for different tasks.
• Analyze traffic flow for city planning.
• Simulate stock market trends with data.

Mathematics

• Explore repeating patterns in nature.
• Find Fibonacci sequences in flower petals.
• Sort numbers with different algorithms.
• Play with prime numbers’ unique properties.
• Calculate shapes’ areas and perimeters.
• Make geometric shapes from everyday items.
• Graph different types of number sequences.
• Study triangles’ angles and side lengths.
• Chart real-life data with graphs.
• Discover infinity’s role in math.

Health Science

• Practice stress-relief techniques like deep breathing.
• Monitor sleep habits and its impact on focus.
• Track diets and heart health.
• Try mindfulness exercises for mental health.
• Exercise and track mood changes.
• Limit screen time and observe sleep patterns.
• Listen to music for relaxation.
• Monitor self-esteem and social media use.
• Form support groups for stress management.
• Meditate to improve emotional balance.

Social Science

• Study group decisions and peer pressure.
• Compare school achievements across incomes.
• Explore friendships in the age of social media.
• Survey cultural norms and their impacts.
• Check family dynamics and mental health.
• Discuss gender roles and career choices.
• Survey parenting styles and academic success.
• Observe leadership styles and personalities.
• Compare teaching methods for engagement.
• Assess school environments’ impact on grades.

These project ideas offer hands-on learning and real-world applications, perfect for sparking curiosity and making science fun!

What is the best science experiments for Class 8?

Check out some of the best science expeirments for class 8:-

• Fizz-Pop Chemistry Show : Ever seen vinegar and baking soda team up? Mix them, and watch the fizz party! It’s not just a chemical reaction; it’s a spectacular display of science in action. You’re practically hosting a mini fireworks show in a jar!
• Liquid Magic Density Tower : Picture this – a tower of liquids that don’t mix! Create your own magical density tower using liquids like oil, water, and syrup. It’s like a liquid rainbow that defies gravity right on your desk.
• Gadget Gurus: Simple Machines Edition : Step into the shoes of an inventor! Build simple machines like levers or pulleys using everyday materials. It’s not just a science experiment; it’s your chance to be a genius inventor crafting tools that make life easier.
• Sun Chef Solar Oven Extravaganza : What if you could cook using the power of the sun? Enter the solar oven! Create your own sun-powered kitchen and become the chef of the future. It’s like baking cookies with sunshine – a taste of science and deliciousness.
• Microscopic Safari Adventure : Grab a microscope and embark on a safari, not in the wild, but in the microscopic world! Explore tiny plant and animal cells like a detective solving mysteries. It’s not just science; it’s a journey into the unseen wonders of life.
• pH Party with Colorful Chemicals : Get ready for a pH party where colors tell the tale! Test the acidity of everyday substances using funky pH indicators. It’s not just science; it’s like being a detective decoding the secret identities of household items.
• Eco-Explorer in a Jar : Transform into an eco-explorer with your own mini-world in a jar. Watch plants, soil, and tiny critters create a living ecosystem. It’s not just an experiment; it’s your personal nature documentary unfolding right on your desk.

So, whether you’re causing a chemistry commotion or going on a microscopic safari, Class 8 science experiments are not just lessons – they’re your ticket to a world of thrilling, hands-on exploration!

So, there you have it – science fair project ideas for 8th grade are like treasure maps to a land of curiosity and fun.

Imagine your classroom transforming into a wild science safari, with you as the fearless leader. Whether you’re mixing up potions, building contraptions, or decoding the language of plants, these projects are your backstage pass to the coolest show in town.

So, go ahead, dive in, get your hands dirty (in a totally awesome way), and let the science fair be your stage. Because in the world of 8th-grade science projects, the spotlight is yours, and the discoveries are endless!

FAQs (Science Fair Project Ideas for 8th Grade Students)

1. how can parents support their 8th-grade students in their science fair projects.

Parents can support their children by providing guidance, helping with research, and ensuring they have the necessary materials for their project.

2. What’s the importance of making a hypothesis in a science fair project?

A hypothesis sets the direction for the experiment and helps students make predictions about the outcome.

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The Best 8th Grade Science Fair Projects

Rebecca Gray October 1, 2020 STEM Projects

8th Grade Science Fair Projects – Don’t make it harder than it has to be!

It’s happened. Your eighth-grader brought home an assignment that can strike fear into the hearts of parents everywhere.  It’s true. The science fair is upon us.  The teacher has given them a lengthy rubric outlining all the requirements and presentation methods their assignment must adhere to.  The scope of the project is enough to make your head spin if this isn’t something you’ve already done with them in 7th grade.  The hardest part for most middle-school students is selecting age-appropriate science experiments that can be completed independently.

Hark! Fear not brave parents, for choosing an 8th-grade science project doesn’t need to be scary or overly complicated. Your rookie scientist just needs to find a question (hypothesis) that they really want to answer. Being interested in the outcome (conclusion) of their own project is an important part of getting them to do the work willingly rather than begrudgingly.

Check out some of the best 8th-grade science fair projects we’ve found to get your budding researcher’s wheels moving! (And don’t forget your trusty lab notebook to record methods and observations!):

1. How Does Stress Affect Body Temperature?

• Thermometer

How it’s done:

This project could illustrate why your student literally sweats that math test every week. Have your volunteers perform a timed math test or a series of difficult puzzles.  Take their temperature before and immediately after the high-stress activity, record, and compare! Did your volunteers stay cool under pressure? How  did stress affect their temperature regulation ?

2. Which Beverages Release the Most Gas?

• Baking Soda
• Heating Pad
• Bottles with narrow necks

When is a balloon actually a belch?  In this project of course!  Pour equal amounts of different beverages into individual bottles and add vinegar (to act like our stomach acids).  Placing the bottles on a heating pad will speed up this “mock digestion”.  One of the properties of gas states that gases expand to fill their container.  Expanding gases will inflate the balloons that have been stretched over the opening of the bottle, visually illustrating  which beverage releases the most gas !

3. What Effects Do Carbonated Drinks Have on Meat?

• 3 types of meat (i.e. steak, chicken, salmon)
• 3 containers
• 6 cans of carbonated soda

Did you know soda has a similar pH level to the human stomach? So soda should be able to digest meat as our stomachs do, right?  To test this hypothesis, place each different meat into a container and cover it completely with soda.  Observe the meat over several days.  Record observations.  Students can even weigh the meat before/after the experiment to include quantitative data along with their visual observations. Read more about why  this science project  works the way it does!

4. Create an Optical Illusion With an Infinity Mirror

• Cardboard box
• Mirror (same shape as the container)
• Mirrored window cling
• LED Christmas lights
• A sheet of plexiglass or acrylic
• Cutting tool

Mirror, mirror on the wall – Are you a mirror or a never-ending hall? Your student will create an optical illusion with some inexpensive and basic supplies.  Use adhesive to secure the mirror to the floor of the box.  LED bulbs are inserted through holes in the walls of the box.  The visual trickery lies in the mirrored window cling viewing window.  Check out this  optical illusion  in greater detail!

5. Can We Distill Saltwater With Solar Power?

• 2 plastic containers
• 25 mL graduated cylinder
• 800 mL beaker
• Modeling Clay
• 2 5mL funnels
• Flexible straws
• Steel washers
• Rubber bands
• Plastic Wrap

When ocean water evaporates, the salt is left behind. Collect this desalinated water with a simple DIY contraption. Containers of saltwater placed in the sunshine will begin to evaporate.  Cling wrap will cover the containers to collect evaporation. Use the heavy washers on top of the cling wrap to guide droplets of evaporated water down a gentle slope into the funnel.  The funnel and straw will empty into a waiting cup.  Cover the cup so no freshwater evaporates!  Check out a detailed assembly of the  water distiller !

6. Are Our Fingerprints Inherited?

• Paper Towel
• Tracing paper
• White paper
• Magnifying glass
• Volunteers – 15 pairs of siblings, 15 pairs of unrelated individuals

Volunteers can touch tracing paper that’s been heavily scribbled on with pencil.  Place the index finger onto the sticky side of a piece of tape. That piece of tape now holds a clear fingerprint!  Using the magnifying glass, compare the fingerprints of siblings and non-related volunteers and record. Are they the same pattern? Read up on  fingerprints  to feel like a real detective!

7. Owl Pellet Fossil Reconstruction

• Owl Pellet (available online)
• Clean paper
• Tweezers, needles, and/or wooden probes to deconstruct pellet
• Owl Pellet Bone Chart
• Small papers to separate bones and waste between

Owl pellets (think cat hairball) hold evidence of an owl’s most recent meal. Gently use tweezers, needles, or wooden probes to separate the owl pellet into four quarters.  Carefully pick the quarters apart, and set aside the animal bones on a separate sheet of paper. Think of it like a treasure hunt – a really gross treasure hunt.  Use a  bone chart  to reconstruct and identify the animal found in the pellet.

8. How Does Color Affect Heating? A Look at Light Absorption

• 6-8 identical glass jars
• 6-8 pieces of colored construction paper
• Timer or clock
• Drill for making holes in jar lids

Wrap each jar with construction paper.  Fill each jar with equal amounts of room temperature water.  Take an initial temperature reading, and then another after each jar has been sitting beneath the heat source for an amount of time (i.e. – 30 minutes).  Record your observations, and decide if there is a particular color that absorbed more light/heat! Read about the  science behind this project  in depth.

9. Homemade Hand Warmers

• Jelly crystals
• Iron Fillings
• Calcium Chloride
• Zipper-Lock Bag

You may find yourself repeating  this project  for a cold night of trick-or-treating or winter caroling.  Fill the small cup with water and ¼ tsp. of the jelly crystals.  Allow time for water absorption.  Add iron fillings and Calcium Chloride to the bag.  Manipulate the bag to mix ingredients.  Feel the heat!  You can add numerical data to this experiment by taking the temperature of the polymer beads throughout the experiment.

10. What Makes a Diaper Absorb Moisture?

• New baby diaper
• Zipper-lock bag
• Small plastic cup

It’s probably been a while since you had diapers in your house if you’re helping your 8th grader with homework.  You can use scissors to open the diaper.  You’ll collect polymer powder from the diaper’s stuffing into a cup.  Pour water over and watch as the polymer gels.  You can increase the research level of  this project  by comparing diaper brands and measuring the water quantities each diaper can hold.

11. What Door Handle in the School Holds the Most Bacteria?

• Bacteria growing kit (Petri dishes with agar)
• Sterile cotton swabs

Try to talk your kid out of wearing gloves to school for the rest of the year after completing  this project .  Using sterile swabs, sample 5 dirty doorknobs at the middle school. Rub the swab in the petri dish, cover, label, and date. Get ready to be grossed out.  Observe the Petri dishes over the next few days and keep detailed records of the growth.  Which door handle hid the most bacteria?

12. Why Do We Need Tendons? Engineering a Bionic Hand

• ¾ inch dowel rod
• 1-inch X 4-inch pine plank
• 5 bags of small screw eyes (eyelets)
• 2 rolls of nylon string
• Wide rubber bands
• 1 open eyelet
• White spray paint
• ¾ inch sheetrock screws (x2)
• Basic power tools used under close adult supervision (grinder, jig saw drill press)

This experiment will make your child feel like Tony Stark, and teach them a bit about human anatomy.  You’ll cut and grind dowel rods to make mock “bone segments”.  Eyelets are inserted into bone segments where “tendons” and “ligaments” (string) will attach.  Spray paint all the bone segments white, for an authentic skeleton look.  The pine plank makes up the palm/wrist area.  Assembling this bionic hand  will earn you a high five from your teacher.

13. Which Mouthwash is Most Effective at Killing Bacteria?

• Multiple brands of mouthwash
• Petri dishes with agar for growing bacteria
• Sterile swabs

We predict your child will better about dental hygiene after this science project.   Swab the inside of your student’s mouth a couple of hours after eating, and apply the sample to the petri dish. Use the mouthwash according to the label, rinse with water, then take a second sample with a new swab.  Be sure to label each dish carefully. Repeat for each mouthwash type and compare bacterial growth. Try not to be grossed out, and determine  which brand of mouthwash works the best!

14. Can Caffeine Make Us Faster Typists?

• Caffeinated beverage
• A decaffeinated beverage (soda or coffee)
• Word Processing Program
• Test Subjects

Volunteers will type: “The quick brown fox jumped over the lazy dog.” as many times as possible in one minute after ingesting a non-caffeinated beverage. Repeat the timed typing exercise after a decaffeinated beverage. Keep your volunteers in the dark about which beverage is caffeinated!

Editor’s note:  Let us know how  this project  works out – We might need to install a new coffee machine in the office for faster blog posting!

15. Can we see sound?

• Uncooked rice
• Plastic wrap
• Sound source (Speaker, Pots and Pans, etc)

When your teenager blasts their music, it can feel like they’re banging on your brain!  Show them  how those sound waves look .  This project lets us visually see the movement of grains of rice created by sound waves from loud noise nearby.  You can use pots and pans or a stereo speaker as a sound source.

16. Investigating the effects of external stimuli on carnivorous plant digestion

• 3 Dionaea muscipula of similar size
• Small crickets (available at any pet store)
• 3 temperature controlled locations
• Thermometers

Plants straight out of a science fiction movie  are enough to make any student interested in this project!  You’ll look at external stimuli effects on the digestion time of the Venus flytrap.  Plants are placed in locations where temperatures can be monitored and controlled.  “Feed” the plant a cricket.  After the plant snaps shut, monitor how many days each plant spends digesting the insects.  Do warmer temperatures speed up digestion?  Make sure your student doesn’t try to feed their little brother to the plant.

17. Determining the Iodide content of different types of salt.

• Plastic cups
• 100mL graduated cylinder
• Distilled water
• Laundry starch solution
• Iodine antiseptic solution
• Medicine dropper
• 5 types of salt
• Hydrogen peroxide solution

Tell your eighth grader there’s no reason for them to be ‘salty’ about a little hard work.   This project  is inexpensive and has a short observation.  First, create a solution of distilled water, laundry starch, and iodine.  Stir and set aside.  Mix salt and distilled water and stir. Add 15mL of vinegar, then 15 mL of hydrogen peroxide.  Add 2.5 mL of the starch solution you set aside. Repeat these steps with each salt. What colors are you seeing?

18. What material blocks UV light most efficiently?

• UV reactive beads (available at most craft stores or online)
• Ultraviolet lightbulb (or a sunny day)
• Sunglasses, UV protecting clothing,sunglasses, sunblock, umbrella

This project will have your teenager arguing a little less about wearing sunblock on the next family vacation.  UV reactive beads change from white to vibrant colors when exposed to UV light.  You can coat the beads with sunblock, place them under sunglasses or UV protectant clothing, and compare the color changes.  You can compare sunscreen brands or SPF levels with this project.  Check out  these UV sensitive beads  in action.

19. How much electromagnetic radiation is emitted during cell phone use?

• Working cell phone
• Measuring tape
• Radio frequency meter

Is your teen obsessed with their cell phone?  This experiment  may make them hesitate to send that next text!  Use the radio frequency meter to test the electromagnetic radiation power emitted from all sides of the phone when a call is coming in, as well as when a text message is coming in.  Record the data, and analyze when complete. Does the amount of power differ when calling or texting? Does it decrease with distance?

20. What makes ice melt fastest?

• Ice cubes – same shape and size
• Glass bowls
• Calcium chloride (available at local hardware stores)

Is your science fair student old enough to shovel the walk this winter?  They could use this experiment to go the extra mile in de-icing the walk to the mailbox. Place the same number of ice cubes into separate bowls.  Apply each melting material to the ice.  Observe the melting ice.  Which bowl melts first? Record your results in your lab notebook.   Repeat the experiment  several times for accurate results.

21. Engineering earthquake-safe skyscrapers – Which design is the most stable

• Lego bricks
• 10X10 lego base plate
• Rubber balls
• Smartphone and Google’s free science journal app (It has an accelerometer feature.)

Are you an architect?  See if your structure designs can withstand the seismic activity of your shake-table.  Sandwiching four rubber balls between two sheets of plexiglass with rubber bands forms the base of a shake table that acts like an earthquake. Test the structural integrity of lego skyscrapers of different sizes and shapes.   This project  utilizes a cool (and free) Google feature called the “Science Journal App”.

22. Can you extract and store your own DNA?

• Isopropyl Alcohol (95% concentration) chilled in the freezer
• Liquid dish soap
• Wooden skewer

Sparking an interest in forensic pathology could start with this  crazy cool project .  First, create a saline solution with distilled water and salt.  Swish it around in your mouth for thirty seconds.  Spit it back into the paper cup and pour a bit into the test tube.  You’ll add a couple drops of liquid dish soap, some isopropyl alcohol, and voila! A milky white thread of DNA appears suspended in the test tube, ready to be wound around a wooden skewer.  You can freeze it in a vial for indefinite preservation!

23. Which soil type is most fertile for seed growth?

• 4-6 different soil types
• Easy-to-grow-seeds like beans
• Small pots or jars
• Paper towels
• Plastic bag

This project is simple and inexpensive  but may take a few weeks to track.  Start seeds in a ziplock bag between layers of damp paper towels.  Transfer seeds carefully to jars of soil.  Be sure to water them equally, and place them in a location where they have access to even amounts of sunlight.  Track and record plant height and appearance over several weeks and compare.

24. Create your own pH level test strips.

• Food processor
• Red cabbage
• Pot and burner
• Isopropyl Alcohol
• Coffee Filters

Creating their own testing supplies  ups your scientist from rookie to novice! Add chopped red cabbage and boiling water to a food processor.  Give it a good whir, and then strain the mixture.  In a bowl, combine cabbage mixture and alcohol.  Dip the coffee filters into the solution and soak them.  Remove them to dry.  Cut dry filters into strips and store in a dry place for use in awesome future science projects!

25. Can simple plants protect landscapes from soil erosion?

• 6 empty 2-liter bottles
• 1 piece of plywood
• Plant seedlings

This project  shows your child how important vegetation is to keep the shape of our landscapes.  This is a great experiment if heavy rains are a part of your everyday landscape.  Create three different soil situations inside the two liters.  Pouring water through the two liters and into a waiting catch basin shows us how much soil erodes with water/rain, and how plants offer some protection from erosion.

26. Do breath mints actually cool your mouth?

• Strong breath mints
• 250 mL beaker
• Bottled water

The cool, minty feeling of a breath mint can’t just be an illusion, right?   Test the theory !  Add breath mints to room temperature water.  Stir gently for ten seconds.  Take the temperature of the water every 30 seconds for four minutes.  Record and compare the temperatures.  Is it really cooling your mouth?  You could offer the judges at the science fair a breath mint during your cool science presentation!

27. What is leaf chromatography?

• Soft, fresh, green leaves (spinach will work)
• Food processor (or mortar and pestle)

You’ll be amazed at the different colored pigments hiding in a green leaf.  Grind your green leaves into a pulp.  Add some isopropyl alcohol to cover the pulp.  Dip the coffee filter strip in until just the end touches the liquid.  As colors climb the coffee filter, they’ll separate.  Wait until the liquid has climbed to the top, then remove.  You can analyze and even identify the types of pigments on the strip such as  chlorophyll, carotenoids, and xanthophylls .

28. Which plants can resist the poison of a Black Walnut Tree?

• Radish seeds
• Young tomato plants
• Black Walnut hulls
• Measuring cup
• Plastic storage containers
• Cooking pot
• Potting soil

It’s a little known fact that Black Walnut Trees produce a substance known as “juglone” that is toxic to surrounding vegetation through  a process called allelopathy .  It’s a pretty dark defense mechanism.  By boiling the black walnut hulls, you can create a juglone contaminated water source and observe its effects on other plants.  You may have a botanist on your hands by the time it’s over!

29. Can a parabola improve wireless signal for at-home learning?

• A 20 x 15 cm piece of corrugated cardboard
• 20 x 25 cm piece of thin cardboard
• Aluminum foil
• Metric ruler
• Poster board
• Wireless Router
• A program that analyzes the strength of your wireless signal

This project can be helpful for students participating in virtual learning on a weak wireless signal.  Download  Sciencebuddies.org’s Parabolic Reflector Template  to begin this project.  Print and cut! This template will help you create a concave, aluminum foil covered parabolic reflector.  The reflector, when placed on the antennae of a wireless router, can be adjusted to increase or decrease signal strength. Perhaps  this project will help your family share the internet .

30. Is the pH level of rainwater in urban areas more acidic than in rural areas?

• pH testing strips (full range)

Humankind’s impact on our world is not always visible, but this has the makings of  a powerful pollution project .  You may be able to use Project #25 on this list as a partner project. Collect rainwater in an area near a busy urban freeway.  Collect rainwater in a suburban area.  Collect rainwater in a rural area.  Test the pH level of multiple samples and compare.  What do the pH levels say about possible pollution in those areas?

What’s The Big Deal With Science Projects Anyway?

Every amazing discovery in our life was made by a researcher who did a science project.  Computer programs, apps, vaccines, and medicine are all products of scientists’ project results.  Make sure your budding researcher knows STEM education is the future.   Learn why STEM Education is our world’s most important asset.  And don’t forget the eye protection!

149+ Great 8th Grade Science Fair Projects & Experiments

Are you an 8th-grader looking for awesome 8th grade science fair projects? If yes, we are here to give the best science fair project ideas that will not only impress your classmates and teachers but also teach you valuable scientific concepts. 

Generally, Science fairs are a fantastic opportunity for students to explore the world of science through hands-on experiments and investigations.

We’ve compiled a list of over 149 intriguing and innovative science fair project ideas and experiments for 8th graders. Whether you’re interested in biology, chemistry, physics, or environmental science, there’s something here for everyone. 

So, let’s dive into the exciting world of science and discover your next winning project!

Also Read: Science Research Topics

What Is A Science Fair

Table of Contents

Students of all ages, usually from elementary school to high school, show off their science projects, and tests, or study at a science fair. It is an educational event or competition. 

The main goal of a science fair is to get kids interested in topics like science, technology, engineering, and math (STEM). Science shows give people the chance to do hands-on science research, learn how to think critically, and share their results with a larger audience.

A science fair is to promote scientific inquiry, critical thinking, and hands-on learning among students. Students explore scientific concepts, conduct experiments, and present their findings in a structured and often competitive setting.

How A Typical Science Fair Works

If you want to know what is a procedure in a science fair project and how it works, you can follow these points. It is such as;

1. Project Selection

Students choose a scientific topic or question that interests them and design a project around it. This could involve conducting experiments, collecting data, analyzing data, or building a model or prototype.

2. Research

Students research their chosen topic to understand existing knowledge and relevant scientific principles. They may also review literature, consult with experts, and gather background information.

3. Experimentation

If their project involves experiments, students plan, conduct, and document experiments carefully. They may need to follow the scientific method, including hypothesis formulation, data collection, and analysis.

4. Data Collection

Students collect data, which often includes measurements, observations, and other relevant information. They record their findings systematically.

5. Analysis 

After collecting data, students analyze the results to draw conclusions. They may use graphs, charts, and statistics to present their findings effectively.

Students create a display board or presentation to communicate their project to others. The display typically includes key information such as the problem statement, hypothesis, methods, results, and conclusions. Visual aids, diagrams, and photographs are often used to enhance the presentation.

7. Presentation

Students present their projects to judges, teachers, fellow students, and sometimes parents or the public. They may be asked questions about their work to assess their understanding and communication skills.

Top 149+ Great 8th Grade Science Fair Projects & Experiments

The following are the best 8th grade science fair projects ideas for students. It is such as;

Best 8th Grade Science Fair Projects In Biology 

• Plant Growth with Music
• The Effect of pH on Enzyme Activity
• Comparing Organic and Inorganic Fertilizers
• Testing the Antibacterial Properties of Common Household Items
• Which Food Attracts the Most Fruit Flies?
• The Effect of Light Color on Plant Growth
• Comparing the Efficiency of Natural and Chemical Pest Repellents
• Do Plants “Breathe” at Night?
• The Impact of Temperature on Seed Germination
• Microorganisms in Your Environment

Easy 8th Grade Science Fair Projects In Chemistry 

• DIY pH Indicator
• Electrolysis of Water
• The Effect of Temperature on Crystal Growth
• Comparing the Vitamin C Content in Different Fruits
• Chemical Reactions in Cooking
• Testing the pH of Household Cleaners
• Acid Rain’s Impact on Plant Growth
• The Chemistry of Baking Soda and Vinegar
• Testing the Effect of Temperature on Battery Performance
• The Science of Lava Lamps

Cool 8th Grade Science Fair Projects In Physics 

• The Relationship Between Air Pressure and Altitude
• The Pendulum’s Period
• The Effect of Surface Texture on Friction
• Constructing a Homemade Electromagnet
• Investigating Projectile Motion
• The Physics of Sound Waves
• The Relationship Between Light Intensity and Distance
• Comparing Solar Cell Efficiency
• Newton’s Laws in Everyday Life
• The Effect of Magnet Strength on Ferrofluid Behavior

Fast And Easy 8th Grade Science Fair Projects In Environmental Science 

• Water Pollution Testing
• The Impact of Oil Spills on Marine Life
• Air Quality Monitoring
• Waste Reduction Strategies
• The Effect of Ocean Acidification on Marine Shells
• Renewable Energy Sources
• Biodiversity and Ecosystem Health
• The Impact of Deforestation on Carbon Dioxide Levels
• The Greenhouse Effect
• Recycling Plastics

Engineering Projects For 8th Grade Science Fair Projects Winners

• Designing a Wind-Powered Vehicle
• Building a Simple Electric Motor
• Designing a Solar Oven
• Creating a Hydraulic Robot Arm
• DIY Water Filtration System
• Paper Bridge Construction
• Balloon-Powered Car Design
• The Science of Flight
• Building a Simple Circuit Board
• Water Rocket Launch

Good Science Fair Space and Astronomy Projects

• Solar System Model
• Studying Lunar Phases
• Mapping the Night Sky
• Investigating the Effects of Microgravity
• Simulating Exoplanet Discoveries
• Modeling the Earth’s Seasons
• Rocket Science: Launching Model Rockets
• Studying Solar Flares and Their Impact on Earth
• Comparing the Characteristics of Planets
• Black Holes and Gravitational Waves

Earth Science Projects For Science Students In High School

• Volcano Eruptions
• Investigating Earthquakes
• Weather Patterns and Predictions
• Formation of Crystals in Rocks
• Soil Erosion and Conservation
• The Water Cycle
• Natural Disaster Preparedness
• Ocean Currents and Climate
• Investigating the Greenhouse Effect in Terrariums
• The Formation of Fossils

Great 8th Grade Science Fair Projects For Behavioral Science Projects

• The Impact of Music on Mood
• The Stroop Effect
• Memory and Recall
• The Influence of Peer Pressure on Decision-Making
• The Psychology of Color
• The Impact of Sleep on Academic Performance
• Effect of Social Media on Well-Being
• The Power of Persuasion
• Cultural Differences in Perception
• The Psychology of Decision-Making

Health and Medicine Science Fair Projects

• Comparing the Effectiveness of Natural Remedies
• The Impact of Exercise on Heart Rate
• Handwashing: The Science of Hygiene
• Healthy Eating Habits
• The Influence of Diet on Blood Sugar Levels
• The Effects of Stress on Health
• Microbiome Analysis
• Effects of Smoking on Lung Capacity
• The Science of Vaccination
• Analyzing the Impact of Sleep on Physical Health

Science Fair Robotics and AI Projects

• Building a Simple Robot
• Programming a Chatbot
• Obstacle-Avoidance Robot
• DIY Water Rocket Launch
• Voice-Activated Home Automation
• Machine Learning for Predictive Analytics
• 3D Printing and Robotics
• Autonomous Drone Programming
• Robotic Arm Control
• Deep Learning for Image Recognition

8th Grade Science Fair Social Sciences Projects

• Analyzing the Impact of Social Media on Relationships
• Studying Cultural Stereotypes
• The Influence of Advertising on Consumer Behavior
• Bullying Prevention Strategies
• Environmental Conservation Behavior
• The Impact of Empathy
• Media Influence on Body Image
• Cross-Cultural Communication
• Understanding Prejudice and Discrimination
• The Psychology of Altruism

Computer Science and Programming 8th Grade Science Fair Projects

• Creating a Video Game
• Encryption and Data Security
• Coding and Debugging
• Website Development
• App Development
• Artificial Intelligence Chatbot
• Password Strength Analysis
• Data Visualization
• Machine Learning for Prediction
• Cybersecurity and Ethical Hacking

Simple 8th Grade Agricultural Science Fair Projects

• Crop Rotation Experiment
• The Impact of Soil Types on Plant Growth
• Hydroponics vs. Soil-based Farming
• Pesticides and Pollinators
• Composting and Soil Fertility
• Plant Nutrient Analysis
• Aquaponics Systems
• Food Preservation Techniques
• The Impact of Fertilizer Types on Plant Growth
• Biodegradable vs. Non-Biodegradable Packaging

Best Material Science Projects

• Testing Conductivity of Materials
• Materials for Solar Cells
• Strength of Materials
• Materials for Filtration
• The Science of Superconductors
• Materials for Insulation
• Shape Memory Alloys
• Materials for Nanotechnology
• The Science of Polymers

Most Interesting Science Fair Projects In Materials for 3D Printing

• Geology and Earth Science Projects
• Mineral Identification
• Rocks and Minerals Collection
• Geological Mapping
• Earth’s Magnetic Field
• Plate Tectonics and Earthquakes
• Volcanic Eruptions
• The Rock Cycle
• The Geological History of Your Region

What Is An Abstract For A Science Fair Project

An abstract for a science fair project is a concise summary that provides a brief overview of your entire project. It’s typically one paragraph long and serves as a quick introduction to your project, giving readers a glimpse of what your project is about, what you did, and what you found. The abstract should include the following key elements:

1. Purpose/Objective: Explain the main goal or purpose of your project. What question were you trying to answer or what problem were you investigating?

2. Methodology: Briefly describe the methods and procedures you used to conduct your experiment or research. Include any important variables or materials used.

3. Results: Summarize the key findings or outcomes of your project. What did you discover or observe during your experiment or research?

4. Conclusion: State your project’s conclusion or the significance of your findings. What did you learn from your project, and how does it contribute to scientific knowledge or real-world applications?

5. Implications: If relevant, mention any potential implications or applications of your findings.

6. Recommendations: Suggest any recommendations for further research or experiments related to your project.

How To Choose A Good Science Fair Project

Choosing a science fair project can be an exciting but challenging task. Here are some steps to help you select the right science fair project:

1. Identify Your Interests

Start by thinking about your interests and passions. Consider what topics in science or technology fascinate you the most. Projects are more enjoyable and engaging when they align with your interests.

2. Narrow Down the Field

Science is a vast field. Narrow down your interests to specific areas like biology, chemistry, physics, astronomy, environmental science, or computer science. This will help you focus your project search.

3. Review Guidelines

Review the guidelines and requirements provided by your school or science fair organizers. Ensure you understand the project length, presentation format, and any specific themes or rules for the fair.

4. Brainstorm Ideas

Brainstorm a list of potential project ideas within your chosen field. Think about questions or problems you’d like to explore. Don’t worry about the feasibility at this stage; just generate as many ideas as possible.

5. Research and Feasibility

Research each idea to determine its feasibility. Can you access the necessary materials and equipment? Is it safe to conduct the experiment? Are there resources available to help you understand the topic? Consider the complexity and time required for each idea.

6. Choose a Testable Hypothesis

Once you’ve narrowed down your ideas, choose one with a clear, testable hypothesis. A hypothesis is a statement that predicts an outcome. It should be specific, measurable, and based on existing knowledge.

7. Consult with Teachers or Mentors

Seek guidance from your science teacher or a mentor, if available. They can provide valuable input, help refine your project idea, and ensure it aligns with educational goals and safety standards.

Conclusion – 8th Grade Science Fair Projects

With these 149+ 8th grade science fair projects and experiments, students have a wide range of exciting topics to choose from. Keep in mind to select a project that aligns with your interests and challenges you to learn new concepts. 

It offers the opportunity for creative exploration. Additionally, ensure that your project adheres to safety guidelines and ethical considerations.

The process of conducting a science fair project involves problem-solving, critical thinking, data collection, analysis, and presentation skills. Whether you’re interested in biology, chemistry, physics, or earth and environmental sciences, there’s a fascinating project waiting for you. 

So, pick your favorite project idea, dive into your research, and enjoy the wonderful world of science! 

What makes a winning science fair project?

If you want to win at the higher science fair levels, originality and innovativeness are extremely important. Develop a new method or technique, or research something nobody knows about.

What are the 7 steps of the scientific method?

There are seven steps to the scientific method: Question, Research, Hypothesis, Experiment, Data Analysis, Conclusion, and Communication.

What is a good science fair question?

These are examples of good science fair project questions: How does water purity affect surface tension? When is the best time to plant soy beans? Which material is the best insulator?

What is science project work?

A science project is an independent study of a particular topic that uses the scientific method in order to answer a specific question about how or why something is being impacted in our world.

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Science Fair Projects for 8th Grade

Jan 9, 2024 / By Katherine Rea

Spark scientific curiosity with these science fair projects for 8th grade that make learning about STEM (Science, Technology, Engineering & Math) fun! Our team of researchers and scientists have developed easy-to-follow experiments that help older kids explore chemistry, physics, and tons of other scientific topics.

The best science fair projects for 8th grade begin with a hypothesis -- a supposition or proposed explanation made with limited evidence as a starting point for further investigation. Below, we've included examples of science projects to which you can apply hypotheses. To make a truly awesome science fair project, make these your own and consider how you can explore the science behind these cool demonstrations.

Don’t want the learning to stop? Check out our line of   engineering kits   that are perfect for 8th grade students.

Electromagnetic Train

Did you know that electricity and magnetism are closely linked? In this project, experiment with the interplay between the two by building your own miniature electromagnetic train that zips down a track all by itself.

An electric current creates a magnetic field. In fact, a coil of wire like you made here creates a magnetic field very similar to the magnetic field of a plain old bar magnet. Now, the neodymium magnets have their own magnetic field, and they’re sitting right in the middle of the wire’s magnetic field. And just like a couple of fridge magnets, those magnetic fields interact with each other. That’s where the push that propels your train comes from. The neodymium magnets get pushed along by the magnetic field of the coil of wire.

Carbon Sugar Snake

Make a fiery black snake rise from the ground with this exciting experiment! Using simple household ingredients, learn how a burning mixture of baking soda and sugar can create a stunning carbon snake.

Your carbon sugar snake is the product of three chemical reactions that are all dependent on heat. The first of these reactions occurs when sugar combusts (burns) in the presence of oxygen. This produces carbon dioxide gas and water vapor (also a gas), which pushes more of the sugar/baking soda mixture upwards. Some of this additional sugar heats up but doesn’t have access to any oxygen, so instead of burning, it undergoes thermal decomposition, producing solid carbon and more water vapor. This solid carbon now gives the snake some shape, and also gives the snake its black color. Lastly, the baking soda also decomposes in the heat, producing solid sodium carbonate, and carbon dioxide gas and water vapor. Altogether, these three reactions produce both the solid components of the snake (carbon and sodium carbonate) and hot gases (CO2 and water vapor) that expand and inflate the snake up and out of the sand bowl. The sand in this experiment doesn’t chemically react with anything in the growing snake. Instead, it evenly distributes the heat from the burning lighter fluid to the sugar and the baking soda, ensuring a slow, steady burn and the growth of a long carbon sugar snake.

Dancing Salt

Discover how music creates vibrations you can see using salt and a portable speaker! Then try experimenting with different genres of music to see which ones make the salt dance more.

Speakers, like your bluetooth speaker, produce sound by creating vibrations in the air. Normally, we only hear these vibrations, and we can’t easily see them. Plastic wrap, though, is lightweight and thin enough to vibrate in response to the sounds coming from the speakers. These vibrations move through the plastic wrap unevenly, pushing and shoving the salt around in interesting patterns. As a song progresses, these vibrations change, and the salt moves as if it were dancing. If you can find a YouTube video of a pure tone (like a single, sustained note), observe what happens to the salt when you play that tone through the speakers. A pure tone will create a consistent, unchanging vibration in the plastic wrap. Instead of dancing around, the salt should collect in places in the plastic wrap that aren’t vibrating, making patterns that depend on the frequency of the pure tone. Try a few other pure tones, one at a time, to see some other interesting patterns!

Penny Battery

Learn about electrochemical cells and make a battery using pennies, felt, and a salt water solution. Then, power a digital clock with it!

Things start up when the zinc begins dissolving into the salt water solution. That chemical reaction leaves behind some extra electrons in the undissolved zinc metal. Those electrons could be used to make electrical power if they had somewhere to go to, since electricity is just moving electrons. On the other side of the salt water, the copper reacts by giving some of its extra electrons to the hydrogen in the water. So the zinc side is producing electrons, the copper side is getting rid of electrons… what would happen if you connected them? The electrifying answer is — you get electricity! Electrons zoom from the zinc side over to the copper side, powering any electrical things they pass through along the way. A single set of these two metals and their electrolytic solution is called a “cell.” Sandwich a bunch of cells together, and you get more electrical power from more electrons moving around. The pile of cells you’re about to make—called a “Voltaic pile” after the scientist who invented them, Alessandro Volta—is the basis for the batteries you use every day.

Plant Light Maze

Have you ever noticed how plants grow toward the light? Build this simple light maze, and watch the plant grow around the obstacles to reach the light!

Try experimenting with different mazes and see how the plant reacts. Plants grow toward the light as a way of generating more energy through photosynthesis. So how do the plants grow toward the light? Plants contain a hormone called auxin, which causes plant cells to grow longer. Plant cells on the shady side of a plant contains more auxin hormones, making the plant bend toward the light as the cells in the shade elongate.

Paper Airplane Launcher

Take your paper airplanes to new heights by making a motorized launcher for them. This project could be turned into a cool experiment by adjusting the launcher's trajectory, speed, or even the shape of the paper airplane. Would the plane go further if the launcher's trajectory was raised? Questions like this could become a hypothesis for an experiment!

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More from stem, 3 quick science tricks with gravity.

Did you know that we’ve only started to understand how gravity works in the last 300 years or so? That’s not such a long time for a force that gave us the moon and tides, created our orbit around the Sun, and holds galaxies together. Fortunately, even though gravity’s effects are cosmic, it’s also easy to explore right here on Earth. We’ve gathered three of our favorite quick science tricks for exploring gravity with kids of all ages — and for curious grownups, too!

Which Planet Has the Most Moons? Exploring Moons Within and Beyond our Solar System

From the majestic planets of our solar system to the enigmatic exoplanets scattered across the vast cosmos, the universe is filled with celestial wonders. One such wonder is moons, captivating companions that orbit planets. Today, we embark on an exploration to discover which planet holds the record for the most moons within our solar system and delve into the fascinating realm of exoplanets, uncovering the planets beyond our solar system that boast a multitude of moons.

Science Fair Projects for 7th Grade

These science fair projects for 7th grade are perfect for allowing older kids to explore more advanced scientific concepts, like electrolysis and electroplating.

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8th Grade Science Fair Project Ideas

ThoughtCo / Lara Antal

• Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
• B.A., Physics and Mathematics, Hastings College

8th grade science fair projects tend to involve the scientific method and designing an experiment and not making models or explaining processes. You'll be expected to present data in the form of tables and graphs. Typed reports and posters are the norm (sorry, no handwritten text). You should do the project yourself, rather than enlist heavy-duty help from a parent or older student. It's appropriate to cite references for any information that isn't common knowledge or that draws on the work of others.

Ideas for Chemistry Projects

• Does air temperature affect how long soap bubbles last? Does relative humidity?
• What ratio of vinegar to baking soda produces the best chemical volcano eruption?
• What type of plastic wrap prevents evaporation the best?
• What plastic wrap prevents oxidation the best?
• Can a saturated solution of sodium chloride still dissolve Epsom salts?
• If you shake up different kinds or brands of soft drinks (e.g., carbonated), will they all spew the same amount?
• Do all dishwashing detergents produce the same amount of bubbles? Clean the same number of dishes?
• How permanent are permanent markers? What solvents (e.g., water, alcohol, vinegar, detergent solution) will remove the ink? Do different brands/types of markers produce the same results?
• Is laundry detergent as effective if you use less than the recommended amount? More?
• Do all hairsprays hold equally well? Equally long? Does type of hair affect the results?
• What effect do additives have on the crystals? You could add food coloring, flavorings, or other 'impurities'.
• What steps can you take to maximize crystal size ? You can affect vibration, humidity, temperature, rate of evaporation, purity of your growth medium, and time allowed for crystal growth.
• How does the pH of soil relate to the pH of the water around the soil? You can make your own pH paper , test the pH of the soil, add water, then test the pH of the water. Are the two values the same? If not, is there a relationship between them?

Ideas for Projects About Living Things

• What effect does soap in water have on plants? Is the effect the same at very low soap concentrations as compared with high concentrations?
• How much plant food is too much?
• Are dogs (cats/fish/etc.) colorblind? If so, is the lack of color perception compensated by better light/dark vision?
• What types of words do babies learn to speak first?
• Are goldfish water chemicals really necessary or are they an unneeded expense?
• Can you graft a tomato plant onto a potato plant?
• Do plants react to the presence of other plants? music? different colored light?
• Will chilling an onion before cutting it keep you from crying ?
• Does catnip repel cockroaches better than DEET ?
• What percentage of an orange is water?
• Are night insects attracted to lamps because of heat or light?
• Can you make Jello using fresh pineapples instead of canned pineapples ?
• Does the presence of detergent in water affect plant growth?
• Does magnetism affect the growth of plants?
• Do the same types of mold grow on all types of bread?
• Does light affect the rate at which foods spoil?
• Can you use a household water filter to remove flavor or color from other liquids?
• Is the nutritional content of different brands of a vegetable (e.g., canned peas) the same?
• How do different factors affect seed germination? Factors that you could test include the intensity, duration, or type of light, the temperature, the amount of water, the presence/absence of certain chemicals, or the presence/absence of soil. You can look at the percentage of seeds that germinate or the rate at which seeds germinate.
• Is a seed affected by its size? Do different size seeds have different germination rates or percentages? Does seed size affect the growth rate or final size of a plant?
• How does cold storage affect the germination of seeds? Factors you can control include the type of seeds, length of storage, temperature of storage, and other variable s, such as light and humidity.
• What conditions affect the ripening of fruit? Look at ethylene and enclosing a fruit in a sealed bag, temperature, light, or nearness to other pieces or fruit.
• How close does a plant have to be to a pesticide for it to work? What factors influence the effectiveness of a pesticide (rain? light? wind?)? How much can you dilute a pesticide while retaining its effectiveness? How effective are natural pest deterrents?

Ideas for Physical Projects

• What paper airplane design flies the farthest? stays aloft the longest?
• What soils best support structures, such as buildings?
• What materials glow under black light ? Can you use the UV light to find invisible, possibly smelly, stains in your carpet or elsewhere in your house?
• Do white candles burn at a different rate than colored candles?
• How does the shape of an ice cube affect how quickly it melts?
• Do different brands of popcorn leave different amounts of unpopped kernels?
• How accurately do egg producers measure eggs?
• How do differences in surfaces affect the adhesion of tape?
• Are all potato chips equally greasy?
• Does the power of a microwave affect how well it makes popcorn?
• Do all brands of diapers absorb the same amount of liquid? Does it matter what the liquid is (water as opposed to juice or... um.. urine)?
• How are different soils affected by erosion? You can make your own wind or water and evaluate the effects on soil. If you have access to a very cold freezer, you can look at the effects of freeze and thaw cycles.

More Science Fair Project Ideas

• Middle School Science Fair Project Ideas
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• Examples of Independent and Dependent Variables
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• What Glows Under Black Light?
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Science Fair Made Fun With These Epic 8th Grade Project Ideas

The best science fair projects are comprehensive, understandable, and less time-consuming. A list of easy-to-demonstrate science fair projects for the 8th grade are highlighted in this article. Have a look...

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The best science fair projects are comprehensive, understandable, and less time-consuming. A list of easy-to-demonstrate science fair projects for the 8th grade are highlighted in this article. Have a look…

Students in the 8th grade are well-acquainted with science fair projects and the competition behind them. Participating in the project is fun and interesting for every student. It is a good chance to experiment, by applying your understanding of the various topics of a subject. Nevertheless, the most crucial step is coming up with an idea that is catchy as well as significant. Given below is a list of such suitable project ideas. Take your pick.

List of Science Fair Projects for the 8th Grade

We come across science in nearly all spheres of life. So, you can expect the probable number of project topics. But, selecting a particular subject that is catchy, unique, and interesting to conduct, is easier said than done. Following is a list of biology experiments and science fair projects for the 8th grade, from which you can choose your project title according to your personal interest:

• What is the effect of temperature on the growth of a caterpillar?
• What size of windmill blades gives maximum wind energy, and at what angle?
• Can dogs and cats identify all visible colors? Or are they colorblind to specific colors?
• Studying the stages of a star, including formation, intermediate phases, and death of the star?
• What are the advantages of using fruits flies in genetic studies and research?
• Does exposure to caffeine affect the survival rate of fruit flies?
• What is the concentration of carbon dioxide in a soda bottle?
• Which objects rust the most, and why?
• What are the advantages of cryopreservation in scientific applications?
• Explain the effects of gravity on the direction of growth of plants?
• Studying the effects of water pH on the shape and size of algal cells?
• Is it true that cruciferous vegetables aid in combating cancer? If yes, in what way?
• In what way do food preservatives help in fighting against microbes?
• What concentration of bleach is required to kill molds and other fungus species?
• Can you detect electric charge in fruits and vegetables? If yes, which vegetable or fruit has the highest charge?
• What is glass recycling? What are the benefits?
• Why does a nocturnal insect get attracted to candles and lamps? Is it the heat or the light?
• What is the controversy behind genetically modified (GM) foods? What are the pros and cons of GM foods?
• Does light affect the food spoilage time? Under which light intensity, do foods spoil the most?
• Are there any materials that glow in the dark? What is the phenomenon behind it?
• What ratio of baking soda to vinegar, in volcano projects, produces the best eruption effect?
• Is repeated use of the same water bottles safe for us? Or is there negative effects of reusing water bottles?
• What are the factors (e.g. water, light intensity, temperature, soil, etc.) that contribute to quick germination of seeds?
• Do different cations (calcium ion, sodium ion, potassium ion) affect the growth rate of plants?
• Does soapy water promote the growth and development of plants? What is the concentration of soap water that is destructive for plants?
• Is there any effect of magnetism on plant growth?
• What are the factors that determine the fertility of soil other than nutrients levels?
• How do beneficial soil microbes help in providing nutrients to plants?
• Can plants grow without soil? If yes, under what conditions?
• Is grafting tomato plants over potato plants possible?
• Why does planting the same crop, repeatedly for many years, in the same area, affects the crop yield?
• How do certain plants affect the growth of other plants growing in the same area?
• What can you do to control the ripening of fruits?

At the time of finalizing the science fair project, pick a topic that you are comfortable and confident with, and not because it sounds interesting. After all, you are expected to practically demonstrate the chosen project, and reply to the questions that are put forth by other students.

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30 Eighth Grade Science Fair Projects

By Beth Roberts | Last Updated April 17, 2022

This is a list of science projects that are cool and easy so that anyone from an 8th grade student to a parent can do them. All the experiments only require household items and common sense knowledge. They are not too complicated or expensive to recreate at home, in the eighth grade classroom, or at any age on your own.

1. Water Plants With Various Liquids

In this experiment, I am testing which liquids can be used to water different types of plant life and how it will affect their growth rate and health in comparison to their life when reared in a healthy soil environment with no added liquid nourishment (i.e., natural fertilizers).

Learn more: Science-U

2. Fingerprint Analysis

Fingerprint analysis is one of the most interesting and unique topics that can possibly be studied in a science project. A fingerprint consists of an outer skin layer, sweat glands, blood vessels, hair follicles and more. Unique traits produce a pattern on our fingers each time we touch something- like dust or ink on paper.

Crime Scene Science: Fingerprinting

3. Blow Out The Candle With Chemistry

This article is about a project that use gas to blow out the candles. The project will demonstrate how pressure changes in a closed system can be used to control the flow rate of a gas. When pressure is applied, the volume of air molecules expands and they collide with more force at the nozzle end of the straw.

Learn more: Thought Co.

4. Extract DNA At Home

You too can extract DNA on your kitchen table at home. This article will go through a few methods of extracting DNA with household materials (ie- food ingredients, sweat, saliva) and how they work. 

Learn more: Instructable  

5. Separate Water Into Hydrogen And Oxygen

Today, scientists are harnessing hydrogen to create clean fuel and renewable energy. One way is by using electrolysis to separate water into hydrogen and oxygen gas molecules. In this experiment you will use an electricity powered cell that separates water into its constituent elements.

Learn more: Atena Sciandplay

6. Music Help You Study

Music often helps you feel more relaxed and happy, two things that are important when you’re trying to study. Many people also find listening to music while they work more productive than without it. 

Learn more: Supply Me/Music Study

7. Mentos And Coke

Placing a few Mentos candies into a 2 liter bottle of Coca-Cola, then shaking and tipping it, you can make the two products create energy, thus making an electric current. This could possibly be used as an alternative way to getting electricity someday. The only question is why this reaction occurs?

Learn more: Education

8. Plant With Rooting Hormones

The goal of this planting project is for you to use rooting hormone on a cut bamboo stalk. Planting the bamboo in water and observing any roots that form will show evidence that rooting hormone causes plants to form roots.

Learn more: Gardening Know How

9. Make Your Own Spring Scale

Many of us might be thinking – why make one when I can buy one, but the lesson here is that sometimes you have to put a little more thought into your project. Sometimes, you should make a scale yourself. 

Learn more: Science Buddies

10. Making Batteries From Fruits 

A science fair project that everyone can try at home! Depending on the fruit, you can use these fruits to make batteries or even a solar-powered calculator. It’s a win-win for the planet and your kids rarely need to buy batteries again.

Learn more : Thought Co/Fruit Batteries

11. How Does Caffeine Affect Typing?

One of the best ways to improve your typing speed is by ingesting caffeine. Caffeine has a stimulant effect on the nervous system, making it easy for you to focus and type faster. This isn’t just an academic question: there could be theoretical implications for understanding how caffeine affects performance at a computer keyboard as well. Caffeine gives you more energy, meaning you can put in more hours at work or school without feeling tired.

Learn more: Caffeine and Typing

12. Alcohol’s Effects On The Body

The body has many different systems, including the cardiovascular system and the central nervous system. Alcohol affects all of these. It can affect blood pressure, heart rate, and respiration rate.

Learn more: Health Line

13. The Effect Of Caffeine On Alertness

If you’re looking for a science experiment to conduct, the effect caffeine has on alertness is a great topic! For this project, you will need to buy one caffeinated beverage and one caffeine free drink. You should also keep track of how many hours since your last caffeinated drink and how many hours since your last sleep. After the test, analyze the data by seeing what effects it had on your alertness levels throughout the day.

Learn more: Supply Me/ Caffeine on Alertness

14. Does Eye Color Affect Your Vision?

Your eye color is a genetic trait that cannot be changed. But the way your eyes look can depend on things like your environment and what you ate. This article looks at some interesting research that looked into different aspects of vision such as eye color, mental illness and left handed people.

Learn more: Eyexan

15. Does Chewing Gum Make You Smarter?

Chewing gum is often seen as an unnecessary distraction in the classroom, but new research suggests that a piece of gum may actually improve study performance.

16.  Make An Articulated Hand

Learn how you can make a hand from a block of wood that’s fully articulated with fingers, thumbs, and even little fleshy knuckles.

Learn more: Go Science Kids

17. Peppermint Improve Reaction Times 

This science fair project was created to show how various subjects, such as sports performance and cognitive abilities, can be improved by using peppermint.

Learn more: Science Briefss

18. Making Marshmallows At Home

Making marshmallows at home is a fun and easy science project for the kids! You can make marshmallows by combining confectioners sugar, cornstarch, salt, peppermint extract, vanilla extract, gelatin packets and water in a large saucepan. It takes about 20 minutes to complete this recipe.

Learn more: All Recipes

19. BUILD YOUR OWN RUBE GOLDBERG MACHINE

A Rube Goldberg machine is a device that performs a relatively simple process in a long and indirect way, usually involving uncontrollable events. This can make the machine appear to have an intelligence of its own.

Learn more: Connections Academy

20. Strength Of Eggshell Bridge

The eggshell bridge is one of the most popular science fair projects, and it still stands as a classic tradition in many classrooms around the country. Eggs are easy to come by, economical to purchase, and they’re also an excellent chemistry experiment: what’s inside is more than just scrambled protein! 

Learn more: Go Science Girls

21. Create Your Own Crystals

Crystals are beautiful and fascinating to both the eye and mind. They seem magical, but they’re composed of just a few elements. This article provides an introduction to the science behind crystals so that you can create your own crystal projects at home with what you already have in your kitchen.”.

Learn more: Fantastic Caverns

22. Blow Up A Balloon Using Baking Soda And Vinegar

If you’ve watched any of the countless baking soda and vinegar science fair projects videos like Borat or Johnny Ballgame, then you know how to make a balloon pop using this technique.

Learn more: Cmosc

23. Make Your Own Fog Tornado

Did you know that fog is actually made up of tiny water droplets? It hangs in the air because the air can’t hold it. In order to make a fog tornado, you need two things: an object to spin the water and something to draw a circle around them in the air.

Learn more: Seattle Pi

24. Build An Infinity Mirror

An infinity mirror is a device which reflects an image seen at one end to another end, while maintaining the illusion of continuity.

Learn more: Science Buddies/Infinity Mirror

25. Test For Starch In Plants Source

Many plants store carbohydrates in their stems, leaves and roots. When insects eat the plant, they are able to digest the carbohydrates. The presence of starch can also be seen under a microscope when examining a tissue sample. As a result, scientists have developed tests to detect starch in plants as well as other samples like soil extracts.”

Learn more: By Ju’s

26. Making Hand Warmer

When it’s cold outside, don’t let the weather keep you from doing what you want to do. If it seems like your hands are getting numb and turning white in the winter, here are some ideas on how you can make hand warmer science fair projects.

Learn more: Instructables/Hand Warmer

27. Build A Circuit

If you’ve ever been curious about making your own circuit, or at least thought about giving it a try, but didn’t know where to start, here is your solution. We’ve put together a step-by-step guide that will help you build your very own circuit from scratch with simple materials available in any hardware store.

Learn more: Instructables/Circuits

28. Is It Possible For A Plant To Grow Through A Maze?

There are many in the scientific community that say it is not possible for plants to grow through an obstacle course like this. However there are some who disagree with this sentiment. This is a basic scientific experiment for eighth graders, but the results are astounding.

Learn more: Tree Hozz

29. Wildlife Affected By Oil Spills

Oil spills happen most often in the ocean where many marine animals can be affected. Spills are particularly harmful to marine wildlife when they occur on beaches and offshore areas. 

what people can do to assist in the rescue of wildlife in such situations?

Learn more: Offshore Technology

30. What Plastic Wrap Prevents Oxidation The Best?

This research is looking at which of four plastic wraps (PVC, PVdC, LPDE, and Press and Seal wraps) has the best resistance to oxidation (on a visual scale) and evaporation (in ml).

Learn more: Science Buddies/Plastic Wrap

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Are you looking for science activities to do with your 8th graders? No sweat. We have you covered. Check out our list of 16 science projects and experiments that you can try with your 8th graders this month.

• Yeast Metabolism with and without Aeration | Sciencebuddies.org – Grades 6-8 Biology experiment that evaluates the effects of glucose metabolism in yeast.
• Aspirin Absorption in Carbohydrate Solutions | All-Science-Fair-Projects.com – Grades 6-8, Does aspirin absorb into the bloodstream quicker if taken with a carbohydrate food? Test aspirin dissolution in an assortment of carbohydrate solutions.
• Bacteria and Toothpaste | All-Science-Fair-Projects.com – Grades 6-8, Do you know which toothpaste cleans your teeth best? In this project, you will row bacteria from your recently brushed teeth in petri dishes to find out the answer.
• How Do Roots Grow When the Direction of Gravity Changes? | ScienceBuddies.org -Grades 6-10, Plants respond to gravity by stems that grow upward and roots that grow downward. Experiment with germinating seeds and rotate them to make up down and down up. How do you think the growing seedlings will respond?
• Hydroponics vs. Soil Growth | All-Science-Fair-Projects.com – Grades 6-8, In this project, students find out if plants grow better in soil or a hydroponic solution.
• Puppy Proportions: Your Dog’s Early Months | Sciencebuddies.org – Grades 6-8, Find out how a puppy’s weight, growth, and proportions change early in their lives.
• Do Migratory Birds Like It Hot? | Sciencebuddies.org – Grades 6-8, Pick a species of bird and determine if there is a correlation between air temperature and where and when the birds migrate.
• That’s a Real Smile! …or is it? | ScienceBuddies.org – Grades 6-8, Can people tell the difference between a fake smile and a real one? Gather information from dozens of volunteers to find out.
• Build a Raft Powered by Surface Tension | Sciencebuddies.org – Grades 6-10, Learn about the properties of surface water tension, and use it to propel a raft.
• Paw Preference in Pets | Sciencebuddies.org – Grades 7-10, Are animals left-handed or right-handed like humans?
• Bat Detector: Listen to the Secret Sounds of Bats | Sciencebuddies.org – Grades 7-10, Study the behavior of bats to find out how do they use echolocation to catch their prey
• Saving Migratory Animals | ScienceBuddies.org – Grades 7-10, They’re here today but could be gone tomorrow. Examine the migratory path of a bird species and the similarities and differences between their winter and summer habitats. Recommend which locations should be preserved to protect these species.
• Globular Clusters | Sciencebuddies.org – Grades 7-10, Explore “star gangs” in the Milky Way and beyond. Globular cluster are compact groups of about a million stars that move around in galaxies. Use statistical data to learn how globular clusters help us better understand the universe.
• Demonstrating the Separation of Mixtures | Education.com – Grades 7-10, Separate recycled objects to illustrate how mixtures are created.
• Customize Your Own Drum Set! | ScienceBuddies.org – Grades 7-10, Build a drum set using household materials, a computer, Scratch, and a PicoBoard. Program your drum set to create a synthesized Hip hop, rap, classical, techno, or electronic drumbeat.
• Harmful Algal Blooms in the Chesapeake Bay | Sciencebuddies.org – Grades 8-12, Harmful algal blooms affect the quality of water and impact people, marine animals, and birds. Study how water quality changes before, during, and after algal blooms.

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At most schools, 8th grade is the last year that students participate in the Science Fair. Help your 8th grader make the most of his or her last Science Fair!

In this post, we’ve assembled 20 great science fair project ideas for 8th grade. We link each project description to its original source, where you can get more information and step-by-step instructions.

Do Baseball Stadium Dimensions Affect Batting Statistics?

By reviewing hundreds of stats, you can predict if your hypothesis is true or false.

Recommended for Grade 8+.

Source: www.sciencebuddies.org

How Does Fabric Softener Affect the Flammability of Different Fabrics?

Testing fabrics with and without added fabric softener show the scientist about fire retardant fabrics.

Recommended for Grades 8+.

Source: www.projects.juliantrubin.com

Identifying Counterfeit Bills

Why does the bank teller hold the bill under a purple light? Why does the cashier put a check mark on the bill using a special marker? Test these and find out how to identify counterfeit currency.

Source:  http://www.ScienceProject.com

3 Great Science Fair Projects for 8 th  Graders

Interesting ideas and instructions for 3 different projects, including the best way to soundproof a garage.

Recommended for grades 8+.

Source: MakeScienceFun

Science Fair Projects on Earthquakes

This site offers several different project ideas related to earthquakes. There are links available for additional information.

Recommended for Grades 7-8.

Source: www.earthquake.usgs.gov

The Science of Fingerprints by Leonard Bloch

Fingerprints offer a fun way to explore the science of forensics. This site offers some basic experiments and then takes the student on a “Crime scene” investigation using their fingerprint knowledge.

Source: www.fun-science-project-ideas.com

Gender Difference in Resting Pulse Rate of 7 th Graders

This experiment tested to see if gender made a difference in resting heart rates. Follow the scientist’s experiments to see what you conclude.

Source:  www.sciencefair-projects.org

Do Humans Have a Blind Spot?

This experiment will test if humans have a blind spot in their vision and how to find it.

Source: www.exploratorium.edu

Taste and Smell

This experiment tests the relationship between taste and smell. The site offers great guidelines, links for research and much more.

Recommended for Grades 6-8.

Source: www.sciencefair.math.iit.edu

Does Chewing Gum Make You Smarter?

This will test the theory that chewing gum will help you perform better on tests and other mental challenges.

Recommended for grades 6-8.

Source:  www.education.com

Which Gear Gives the Best Performance in a Kart Race?

These two scientists give you all of their tips to reproduce this experiment on your own to determine who will win your race.

Source: www.pbskids.org

How to Power a Radio with Solar Power

Learn how to power up a radio using the power of the sun!

Source:  www.makeitsolar.com

The Science of Tsunamis

Find out what effect the water depth has on a wave’s velocity.

Recommended for Grade 6-8.

Source: www.sciencebuddies.co

Cleaning Coins

This project explores the effectiveness of various cleaning solutions in cleaning tarnished and oxidized coins.

Source: www.education.com

Is There Chemical Contamination in Your Stream or Creek?

Using lettuce as a bioassay, students can test the quality of water. Check out these experiments for your science fair project.

Source: www.ars.usda.gov

Solar Cell Power Output vs Temperature

In this project you will build a simple circuit and experimental setup to investigate whether the power output of a solar cell changes with ambient temperature.

Does Music have an Effect on Biological Systems?

This experiment will help to determine if music has an effect on the growth rate of vegetation.

Recommended for grades 7-8.

Source: www.cool-science-projects.com

Exploring Skyscraper Design with Legos

Can you determine the best design for a skyscraper? Test out your hypotheses using Legos.

Source: www.mpmideas.com

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Science Projects > Science Fair Projects > Science Fair Ideas  

Science Fair Ideas

When planning a project for science fair, follow your kids’ ideas interests, curiosities and questions they already have. Do you have a young student obsessed with rubbing balloons on her hair and sticking them to the wall? That could be a project!

Or how about a middle-schooler who just likes to light things on fire? Get a quantitative spectroscope so he can analyze the light spectra produced by burning different elements—and make it a science fair project!

The Science fair the perfect way to inspire learning through natural curiosity. To get started on brainstorming ideas for your child’s project, find science fair project ideas by grade level and topic below. Home Science Tools also offers a variety of complete science fair kits to maximize fun and education while minimizing stress.

For detailed directions, you can check out our free Science Fair Guide.

Science Fair Ideas: Projects by Grade Level

Science Fair Projects for Elementary Students

Getting an early start is a great way to foster a lifelong appreciation for scientific discovery. This is a great opportunity to help your kid develop basic scientific skills, such as sorting and classifying, sustaining their attention for long periods of time, using deductive or inductive reasoning, and applying a concept to more general situations. 

Science Fair Projects for Middle School Students

Middle school science fairs are a great opportunity to allow your student to dive in deeper on STEM fields that interest them.  As they develop important science skills, their science fair project should emphasize personal connections to natural phenomena and ways they apply to everyday life.

Science Fair Projects for High School Students

As the world begins to open up for high school students, put their desire to do something meaningful to good use! With science fair, kids get the opportunity to engage current science and technology for the benefit of society. High school science fair projects often ask students to grasp abstract concepts, and use advanced reasoning.

Science Fair Ideas: Projects by Topic

• Biology Science Fair Projects
• Earth & Space Science Fair Projects
• Physics Science & Physics
• Chemistry Science Fair Projects

Science Fair Ideas: Projects for Procrastinators

Your student just announced science fair is when? Yep, life happens, and sometimes you need easy ideas to pull off in a snap. Many science fair projects can be completed in less than two weeks. While we wouldn’t recommend waiting to the last minute, we can help your kid have a great learning experiences. Here are our recommendation for science fair projects with shorter timelines. 

• Last-Minute Ideas for Science Fair Projects

More Science Fair Resources:

• Writing a Science Report
• Science Fair Guide
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Science Fair Projects for 8th Graders

The 8th grade science fair is not just another school event, it’s a rite of passage in the academic journey of students that lets them really spread their wings and discover their passions. It’s a unique event where curiosity meets scientific rigor, setting it apart from the science fairs of earlier grades. By 8th grade, students are often ready to bring a maturity and depth of understanding that elevates their projects from the simple demonstrations seen in earlier science fair projects, to explorations of complex concepts. This is where we start to see our change makers emerge! Get ready to let that curiosity and passion flourish as we tackle the the Science Fair for 8th Graders!

Unlocking the Wonders of Science The 8th Grade Science Fair

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How the 8th Grade Science Fair Is Different

In contrast to the earlier grades, the 8th grade science fair demands a higher level of rigor and scientific inquiry. Middle school students are expected to delve deeper into the scientific method, showcasing not just their results but also an understanding of the experiment process and implications. The projects at this level often involve greater innovation, more sophisticated materials, intricate methodologies, and an expectation of greater autonomy in the research process.

Now this doesn’t mean parents won’t be involved, but unlike earlier years when the science fair projects were a family affair, grade 8 is when students should be more independent when it comes to their projects. Let them take the reins and really take ownership of this project.

We are in middle school now, and it is the perfect time for students to start identifying areas they may want to study, or even possibly pursue as a career. We want our teens to embrace discovery and curiosity through learning. The science fair project is an opportunity to test the waters of future fields of study, without any commitment beyond this one project. So let them explore and get excited!

Unique Science Fair Project Ideas for 8th Graders

Finding the perfect project for the Grade 8 Science Fair can feel challenging, but the best place to start is by looking at the curriculum. What are you studying and learning about this year? In many school districts, 8th grade covers:

• the human body and life systems,
• machines, structures and mechanisms
• energy and energy transfer,
• Earth sciences

Take a look at the curriculum and see what interests you. Your passion and curiosity for a project will definitely show. So make sure you pick something that gets your creative juices flowing!

Want more ideas? Here are a few science fair ideas from the STEAM Powered Family archives that are perfect for 8th graders.

The Chemistry of Food

Exploring how different ingredients or processes affect food is a fascinating topic for aspiring chefs and bakers. They can dive into how different temperatures affect the crystallization of sugars in candy making , or maybe explore how different flour or yeast affects bread making , or dive into the world of cookies and see how different temperatures of butter affect the cookies. The best part of these experiments is that you also get to eat them!

Heat transfer and energy transfer are a common subject matter in 8th grade. In a Solar Oven Project students combine physics, environmental science, and a bit of culinary fun. Build a solar oven using simple materials like cardboard boxes, aluminum foil, and plastic wrap. The objective is to understand how solar energy can be harnessed and used for cooking. The best part with this project is making some delicious treats like s’mores or pizza.

Build a Candle Carousel

This physics experiment and STEM project challenges students to come up with different designs to find the most functional rotor design for a windmill powered by candles. Students will learn about thermodynamics and aerodynamics as they test different designs with their Candle Carousel .

Homemade Battery

Chemistry and physics come alive in this project. Using items like lemons , pumpkins , or potatoes , copper coins, and zinc nails, students can create their own batteries. This experiment teaches about chemical reactions and electrical circuits. Plus, it’s always thrilling to see a small LED light up from power generated by fruits or vegetables.

Water Filtration System

This is a great project for budding environmental scientists. Start by doing a Water Quality Analysis on local water sources by testing for pH and pollutants. Then investigate how to purify or filter water using various materials like sand, gravel, and charcoal. It’s a practical exploration of environmental engineering and raises awareness about the importance of clean water.

Plant Growth with Different Liquids

Perfect for those interested in biology and botany. Here, students can grow plants and water them with different liquids (like water, milk, juice, etc.) to see the effects on plant growth. It’s a simple yet effective way to understand plant biology and the importance of proper nutrients. We conducted two experiments, one experiment explored the impact of acid rain and the other experiment looked at water pollution .

The Greenhouse Effect

Another great project for students interested in environmental sciences is to explore the Greenhouse Effect . We conducted an experiment that demonstrated the Greenhouse Effect, but what can you come up with to combat these heat trapping molecules?

Crystal Growing

A project that is stunningly beautiful and educational… growing crystals! This science fair project is perfect for budding geologists and rock hounds. By creating crystals using substances like borax , salt , sugar , or alum , students can learn about saturated solutions and the process of crystallization. It’s a bit like magic, watching these beautiful structures form over time. Turn it into a science fair project by exploring how different ingredients form different crystalline structures, or maybe how heat affects crystal formation . We did a version of this project idea as part of a Christmas Crystal Gnome Project that could easily be changed into a Science Fair Project.

Reaction Time Testing

One of the subjects covered in most 8th grade curriculums is the human body and one facet of that is exploring reaction times. There are a few different ways you can explore reaction time , including what might affect reaction times. Perhaps explore whether being hungry or overly full affects reaction times. Maybe time of day. Or reaction times with a dominant hand versus non-dominant. You can have a lot of fun with this reaction time science fair project and turn it into an interactive demonstration that science fair goers will love.

Homemade Seismograph

Constructing a basic seismograph using simple materials can be a fascinating project exploring the effects of earthquakes. This allows students to record and understand seismic activities, tying in physics, earth science, and engineering (by exploring how to earthquake proof buildings).

Analyzing Microbial Growth on Different Surfaces

This project involves swabbing various surfaces and culturing the bacteria in petri dishes. Students can study microbiology, learn about hygiene and public health, and even delve into data analysis by comparing growth rates. They can also explore how different soaps impact bacteria growth.

Bio-Plastics from Household Ingredients

This project explores the creation of biodegradable plastics using common kitchen ingredients like gelatin , or milk . It’s an innovative way to discuss sustainability, environmental science, and chemistry, especially in the context of reducing plastic waste. Take this topic even deeper for the science fair by exploring the biodegradation of the different bioplastics you make. Compare how these bioplastics break down to provide insight into environmental sustainability.

Invisible Ink

For students who love history and sleuthing, they will enjoy doing an Invisible Ink science fair project where they can explore the different ways to make invisible ink . This can provide a fascinating opportunity to combine historical studies with chemistry.

Basketball and the Perfect Shot

For your sports loving kids, explore creating a project that allows them to dig into the physics and science of sport. In our project, we looked into the science behind basketball and getting the perfect basket. By building a basketball model we created an interactive experience that was both educational and fun.

Oobleck – Exploring Matter

A fun way to explore matter as part of your science fair project is to test different types of Oobleck. Oobleck is a non-Newtonian Fluid and makes a fascinating study in matter. Does the perfect oobleck recipe exist? See what you find!

Launch the Fair with Catapults

There is so much you can do with Catapults at the Science Fair. These simple machines are a great way to really launch learning and fun at the fair!

Magic Milk Investigation

The best science fair project ideas come from asking, “ what would happen if… ” In this case, we wondered what the impact would be on the fat content of the milk on the Magic Milk colorful reactions. The results were really fascinating!

Crafting a Winning Science Fair Project

Once you have picked your project, you might be wondering how to make it the best Science Fair Project. Here are a few of our best tips, but if you need more more guidance visit our resource on Elementary Science Fair Projects or our Guide to the Science Fair .

The Question

Every great Science Fair Project begins with a question that piques your curiosity. Choose something you’re genuinely interested in exploring.

Research Thoroughly

Go beyond Google, you need to dig in and really research your topic. Go to the library, contact professional organizations, and talk to experts in the field. Well conducted research may open up even more exciting and innovative approaches you can take with your idea. Make sure you understand the science behind your project. The more you know, the better you can design your experiment and interpret your results.

Make a Plan and Document Meticulously

Just like you would make an outline for an essay, spend time creating a plan for your project. Then make sure you detail every step of your experiment. Be meticulous in your approach. Ensure you record all the steps, every part of your process, and your findings accurately.

Think Outside the Box

Innovation is key. Don’t be afraid to try something new or take a different approach to a common problem. Remember all that research you did, get creative and see what you can bring to the research from your unique perspective. Maybe you can solve a problem and become a changemaker!

Focus on the Presentation

How you communicate your findings is just as important as the experiment itself. Create clear, concise displays and practice explaining your project in a way that’s both engaging and informative. One tip I love is to video tape yourself doing your presentation. This can help you fine tune until it is perfection.

This reminds me… proof! Make sure you have proofed everything numerous times for any errors. Get someone you trust to also proof your materials to ensure they are mistake free. This includes your report, displays and any other materials you create to go with your project.

Anticipate Questions

You are the expert on your project. Be ready to answer questions about your methodology, findings, and the implications of your investigations. The better you understand your work, the more confidently you can discuss it. My tip is to get your family or friends to watch your presentation and ask questions. You can even send the video of your presentation to get their feedback to help you prepare for those questions.

The 8th grade science fair is more than just a bunch of experiments, it’s a platform where young minds learn to question, explore, and innovate. By embracing the challenges and opportunities it presents, students not only gain valuable scientific knowledge but also develop skills in critical thinking and problem-solving that will serve them well in their future academic and professional careers. Most of all, use this as an opportunity to develop those passion projects, foster a love of learning, and embrace curiosity!

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50 Fun Kids Science Experiments

Science doesn’t need to be complicated. These easy science experiments below are awesome for kids! They are visually stimulating, hands-on, and sensory-rich, making them fun to do and perfect for teaching simple science concepts at home or in the classroom.

Top 10 Science Experiments

Click on the titles below for the full supplies list and easy step-by-step instructions. Have fun trying these experiments at home or in the classroom, or even use them for your next science fair project!

Baking Soda Balloon Experiment

Can you make a balloon inflate on its own? Grab a few basic kitchen ingredients and test them out! Try amazing chemistry for kids at your fingertips.

Rainbow In A Jar

Enjoy learning about the basics of color mixing up to the density of liquids with this simple water density experiment . There are even more ways to explore rainbows here with walking water, prisms, and more.

This color-changing magic milk experiment will explode your dish with color. Add dish soap and food coloring to milk for cool chemistry!

Seed Germination Experiment

Not all kids’ science experiments involve chemical reactions. Watch how a seed grows , which provides a window into the amazing field of biology .

Egg Vinegar Experiment

One of our favorite science experiments is a naked egg or rubber egg experiment . Can you make your egg bounce? What happened to the shell?

Dancing Corn

Find out how to make corn dance with this easy experiment. Also, check out our dancing raisins and dancing cranberries.

Grow Crystals

Growing borax crystals is easy and a great way to learn about solutions. You could also grow sugar crystals , eggshell geodes , or salt crystals .

Lava Lamp Experiment

It is great for learning about what happens when you mix oil and water. a homemade lava lamp is a cool science experiment kids will want to do repeatedly!

Skittles Experiment

Who doesn’t like doing science with candy? Try this classic Skittles science experiment and explore why the colors don’t mix when added to water.

Lemon Volcano

Watch your kids’ faces light up, and their eyes widen when you test out cool chemistry with a lemon volcano using common household items, baking soda, and vinegar.

Bonus! Popsicle Stick Catapult

Kid tested, STEM approved! Making a popsicle stick catapult is a fantastic way to dive into hands-on physics and engineering.

Grab the handy Top 10 Science Experiments list here!

Free Science Ideas Guide

Grab this free science experiments challenge calendar and have fun with science right away. Use the clickable links to see how to set up each science project.

Get Started With A Science Fair Project

💡Want to turn one of these fun and easy science experiments into a science fair project? Then, you will want to check out these helpful resources.

• Easy Science Fair Projects
• Science Project Tips From A Teacher
• Science Fair Board Ideas

50 Easy Science Experiments For Kids

Kids’ Science Experiments By Topic

Are you looking for a specific topic? Check out these additional resources below. Each topic includes easy-to-understand information, everyday examples, and additional hands-on activities and experiments.

• Chemistry Experiments
• Physics Experiments
• Chemical Reaction Experiments
• Candy Experiments
• Plant Experiments
• Kitchen Science
• Water Experiments
• Baking Soda Experiments
• States Of Matter Experiments
• Physical Change Experiments
• Chemical Change Experiments
• Surface Tension Experiments
• Capillary Action Experiments
• Weather Science Projects
• Geology Science Projects
• Space Activities
• Simple Machines
• Static Electricity
• Potential and Kinetic Energy
• Gravity Experiments

Science Experiments By Season

• Spring Science
• Summer Science Experiments
• Fall Science Experiments
• Winter Science Experiments

Science Experiments by Age Group

While many experiments can be performed by various age groups, the best science experiments for specific age groups are listed below.

• Science Activities For Toddlers
• Preschool Science Experiments
• Kindergarten Science Experiments
• First Grade Science Projects
• Elementary Science Projects
• Science Projects For 3rd Graders
• Science Experiments For Middle Schoolers

How To Teach Science

Kids are curious and always looking to explore, discover, check out, and experiment to discover why things do what they do, move as they move, or change as they change! My son is now 13, and we started with simple science activities around three years of age with simple baking soda science.

Here are great tips for making science experiments enjoyable at home or in the classroom.

Safety first: Always prioritize safety. Use kid-friendly materials, supervise the experiments, and handle potentially hazardous substances yourself.

Start with simple experiments: Begin with basic experiments (find tons below) that require minimal setup and materials, gradually increasing complexity as kids gain confidence.

Use everyday items: Utilize common household items like vinegar and baking soda , food coloring, or balloons to make the experiments accessible and cost-effective.

Hands-on approach: Encourage kids to actively participate in the experiments rather than just observing. Let them touch, mix, and check out reactions up close.

Make predictions: Ask kids to predict the outcome before starting an experiment. This stimulates critical thinking and introduces the concept of hypothesis and the scientific method.

Record observations: Have a science journal or notebook where kids can record their observations, draw pictures, and write down their thoughts. Learn more about observing in science. We also have many printable science worksheets .

Theme-based experiments: Organize experiments around a theme, such as water , air , magnets , or plants . Even holidays and seasons make fun themes!

Kitchen science : Perform experiments in the kitchen, such as making ice cream using salt and ice or learning about density by layering different liquids.

Create a science lab: Set up a dedicated space for science experiments, and let kids decorate it with science-themed posters and drawings.

Outdoor experiments: Take some experiments outside to explore nature, study bugs, or learn about plants and soil.

DIY science kits: Prepare science experiment kits with labeled containers and ingredients, making it easy for kids to conduct experiments independently. Check out our DIY science list and STEM kits.

Make it a group effort: Group experiments can be more fun, allowing kids to learn together and share their excitement. Most of our science activities are classroom friendly!

Science shows or documentaries: Watch age-appropriate science shows or documentaries to introduce kids to scientific concepts entertainingly. Hello Bill Nye and the Magic Schoolbus! You can also check out National Geographic, the Discovery Channel, and NASA!

Ask open-ended questions: Encourage critical thinking by asking open-ended questions that prompt kids to think deeper about what they are experiencing.

Celebrate successes: Praise kids for their efforts and discoveries, no matter how small, to foster a positive attitude towards science and learning.

What is the Scientific Method for Kids?

The scientific method is a way scientists figure out how things work. First, they ask a question about something they want to know. Then, they research to learn what’s already known about it. After that, they make a prediction called a hypothesis.

Next comes the fun part – they test their hypothesis by doing experiments. They carefully observe what happens during the experiments and write down all the details. Learn more about variables in experiments here.

Once they finish their experiments, they look at the results and decide if their hypothesis is right or wrong. If it’s wrong, they devise a new hypothesis and try again. If it’s right, they share their findings with others. That’s how scientists learn new things and make our world better!

Go ahead and introduce the scientific method and get kids started recording their observations and making conclusions. Read more about the scientific method for kids .

Engineering and STEM Projects For Kids

STEM activities include science, technology, engineering, and mathematics. In addition to our kids’ science experiments, we have lots of fun STEM activities for you to try. Check out these STEM ideas below.

• Building Activities
• Self-Propelling Car Projects
• Engineering Projects For Kids
• What Is Engineering For Kids?
• Lego STEM Ideas
• LEGO Engineering Activities
• STEM Activities For Toddlers
• STEM Worksheets
• Easy STEM Activities For Elementary
• Quick STEM Challenges
• Easy STEM Activities With Paper  

Printable Science Projects For Kids

If you’re looking to grab all of our printable science projects in one convenient place plus exclusive worksheets and bonuses like a STEAM Project pack, our Science Project Pack is what you need! Over 300+ Pages!

• 90+ classic science activities  with journal pages, supply lists, set up and process, and science information.  NEW! Activity-specific observation pages!
• Best science practices posters  and our original science method process folders for extra alternatives!
• Be a Collector activities pack  introduces kids to the world of making collections through the eyes of a scientist. What will they collect first?
• Know the Words Science vocabulary pack  includes flashcards, crosswords, and word searches that illuminate keywords in the experiments!
• My science journal writing prompts  explore what it means to be a scientist!!
• Bonus STEAM Project Pack:  Art meets science with doable projects!
• Bonus Quick Grab Packs for Biology, Earth Science, Chemistry, and Physics

Subscribe to receive a free 5-Day STEM Challenge Guide

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6th Grade Science Fair Projects: Experiments, Investigations, And Model Building

January 10, 2024 //  by  Clover

Want to see your students dig into science without even realizing they’re studying? Showcase all your amazing STEM lessons by giving your kids the reins– they’ll jump out of their seats at the opportunity to build projects for the school science fair! Let your kiddos wow their parents, teachers, and peers with how they put their investigations into action. Check out these fabulous ideas and get ready to be amazed by your little scientific geniuses!

1. Carbon Sugar Snake Experiment

Who wouldn’t get excited by a ‘hand-made’ giant carbon sugar snake? This science experiment shows how a carbon snake is born by burning a mixture of baking soda and sugar. You’ll probably need to consider bringing this one outdoors, but the results will be totally worth it. 

Learn More: Kiwi Co

2. Irons in Breakfast Cereals

Did you know that extracting all the iron from your body could make two small nails? Let your students investigate this by finding out the amount of food-grade iron in their favorite breakfast cereals. For an even cooler school science project idea? Compare brands and make a bar chart to show the difference.

Learn More: Steve Spangler Science

3. Transform Milk into Plastic

How can my daily drinking milk become plastic? This activity will teach your kiddos the concept of plastic polymerization from natural resources such as milk and other dairy products. They’ll find it both disgusting and amazing!

Learn More: Science Buddies

4. The Competition of Skateboard Wheels

Have you got any skateboarding fans in your classroom? They’ll shred their way right through the science fair doors with this one! Bring on the research and inspect the material and tensile strength of various types of skateboard wheels to see how they affect the rebound.

Learn More: Education

5. Powered Boat by Baking Soda

Let’s level up the same science behind the classic baking soda volcano reaction with this fun boat race Have your kiddos place the materials for the experiment into a modified plastic bottle and then let them test their creations in a competitive race with fuel straight from the kitchen cabinet. 

6. Create Two-Stage Balloon Rocket

Give the science fair a glow-up with this two-stage balloon rocket experiment. Start by letting your kiddies build their rockets by tapping staws onto inflated balloons; thread some string through the straws and you’re ready for blast off! They’ll be learning about the same laws of motion used by airplanes and rockets!

7. The Sponge Gummy Bears

Behold! The mysterious secrets of gelatin! Turn your kids’ favorite gummy bears into giants by placing them in water and other solutions. This is an incredible food science project to learn about molecules and have FUN! The only rule- don’t eat your lab tools!

8. Motorized Tiny Characters

Have a science dance party! Your sixth-graders will love these DIY motorized characters who can dance from the simplest source of energy – a homopolar motor. This creative activity makes tiny dancers, but who knows what else your creative constructors will create?

Learn More: Babble Dabble Do

9. Magic Spinning Pens

This little experiment taps into loads of science skills for any stage. From the investigation to the trial and research, your learners will see what it takes to balance a pen by sheer magnetism. Sounds easy? Think again! They’ll need lots of adjustments in the magnet size and positioning to get a perfect balance.

Learn More: Frugal Fun For Boys And Girl

10. Create a WiggleBot

“Bleep-bleep-bloop!” Introduce your class to the world of robotics with this fantastic activity. The materials used are easy to find and they’ll love creating these tiny mini-creatures who can draw on their own! What a perfect introduction to learning about power, electrical energy, and its sources.

Learn More: Research Parent

11. Build an Electro-Magnetic Train

Let your kiddos tinker away with this super fun railway activity. They’ll create a hypothesis and speculate on what needs to be adjusted with the energy source and wire lengths to make the train run smoothly. This experiment is a great introduction to the scientific process for them!

Learn More: Frugal Fun For Boys And Girls

12. Handmade Holiday Greeting Card Circuits

Everyone loves a festive greeting card! Why not add some science into the holiday season by guiding your little learners to make circuits and embed them into their cards? They’ll explore variables that affect the flow of electricity such as using wood versus rubber. Their results will light up the room!

13. A Solar-Powered Robot Grasshopper

A scary robot grasshopper that vibrates when it’s placed near any light? WHAT?!? Have your kiddos record this cool grasshopper’s level of movement under different amounts of light and solar power to let them get a better understanding of how this cool tech works!

14. Camera Obscura by Recycled Cans

This handmade camera will take your kids back in time and will quickly become their favorite “new” tool. They’ll start to understand modern photography, by exploring the fundamental principles of how a camera works. What a fabulous pitch for the school science fair! Come on everybody, say cheese!

15. A Heat-Sensitive, Color-Changing Experience

Mood rings and lipsticks that change color are always fascinating for kids. You’ll uncover the magic of these cool items by introducing them to the color-changing element of thermochromic pigment. Create some amazing color-changing slime as an example and let your 6th graders get gooey while they learn more! 

Learn More: Left Brain Craft Brain

16. Make Your Own Crystal Landscapes

It’s alive! Or is it? Let your kids extend their middle school science understanding by delving into the mind-blowing phenomenon of crystal growth. They’ll create a spectacular crystal landscape that’s sure to add dazzle to your science fair. When purchasing ingredients in the US, modify your recipe by using Epsom Salt.

17. Roots Grow Versus Gravity Experiment

Gravity keeps us on the ground, but does it also affect plants’ growth here on the earth? Let your kiddies find out with this fun windowsill activity that’ll be sure to blow minds at the science fair. They’ll be amazed to see roots growing every which way, as they use gravity as a variable!

18. Seafloor Spreading and the Earthquakes

What happens when the seafloor spreads? Let’s bring all the science of tectonic plates to life! Using some folded paper and a cardboard cylinder, your kiddos will create a working model of how new rock is formed on the ocean’s floor! 

19. How Plants Help Prevent Tsunami Impact

We all know how destructive the force of a tsunami can be, but did you know that planting trees can help prevent destruction from these natural disasters? Have your kiddos create their very own coastal landscapes, complete with buildings and greenery, then have them recreate a tsunami with some water and assess the damage! 

Learn More: YouTube

20. How Acidic Water ‘Eats’ Rocks

Can rocks be dissolved in a liquid like sugar in coffee or tea? In this geology science experiment, your students will use a scientific method to investigate how rocks are being ‘eaten’ by acidic water. In your classroom, you’ll be using vinegar concentrations, but you can extend your kids’ learning by exploring what sorts of acids might be eroding rocks out in nature.

21. Cutting Ice Cubes With Wire

Give a whole new meaning to “break the ice”! Did your middle school students know that they can cut through an ice cube with just a piece of wire and some weights? Demonstrate the method for them as they learn about regelation and the physics of water. All that’s left is for them to have a go themselves! 

22. Growing Bateria

Don’t do this activity after lunch! Have your kiddies find samples around their homes or in school for testing to reveal the hidden bacteria in each place. It’s easy to make up some petri dishes and then all your little microbiologists will need to do is swab their samples! The results might surprise them!

23. Heart Pump Model

It might be ‘heart’ to believe, but your kiddos can make a model of a human heart ventricle, using everyday items from around the house! By following the instructions, they can assemble their model made from plastic bottles, balloons, and straws, helping them learn about the complex inner workings of the cardiovascular system. 

Learn More: Tina’s Dynamic Home School Plus

24. Building a Stick Bridge

Explore the vast array of bridge designs across the world and put your learners’ creativity and engineering skills to the test. Your kiddos will experiment with popsicle sticks to build bridges and find out which model is the safest and holds the most weight.

Learn More: Scholastic

25. Building Stable Frameworks for Earthquakes

Your future engineers will explore building construction from a safety perspective with this next idea!  Have them build some different structures with popsicle sticks then see how they stand up to a (kiddie-made) earthquake!

Learn More: Science Love to Know

26. Forming Magic Cloud

This easy 6th-grade science project brings a few welcome clouds to the sunny atmosphere of your science fair. Make a cloud in a bottle using some rubbing alcohol and send your fair-weather friends packing. Want extra experiments? Try twisting the cap back, re-pressurizing the bottle, and see what happens next!

27. Designing Biodomes

This amazing engineering project challenges your kiddos to create a scale-model biodome! They’ll be able to observe reactions in ecosystems, environments, and food chains, and at the same time, explore the energy flow. What a super hands-on way to introduce them to the topic of plants and animals’ basic needs and the interdependence of an ecosystem.

Learn More: Teach Engineering

28. The Archimedes Squeeze

Challenge your class to test Archimedes’s principles like real engineers back in the day in this hydrodynamic project! Using aluminum foil balls varying in diameter they’ll learn all about water displacement as they submerge them and weigh what spills over. They’ll be making a splash in the name of science!

29. Cleaning Coins

Let your kiddos explore the science of cleaning! Give them a couple of different cleaning solutions to experiment with to find out what works and what doesn’t! Then brainstorm and further the experiment to figure out why some things work better than others.

Learn More: Gally Kids

30. Make Your Own PH Indicator

Don’t have an expensive pH tester? Well, it turns out you don’t need one! Explore the pH scale and let your middle school students make their own indicator solution with a simple ingredient from the grocery aisle; red cabbage! Grocery store science at its finest!

Learn More: Compound Interest

31. Skittles Science Fair Project

Show off all the colors of the rainbow in this beautiful experiment. We’re sure your kiddos love playing with food, especially candy, and this is certainly no exception! This is a fun and visually impressive way to help them learn about diffusion and balanced solutions! Who knew science could be so colorful?

32. Tooth Decay Egg Experiment

We all know that lots of sugary drinks can damage our teeth, but which ones are the worst? Challenge your kiddies to find out in this simple experiment! Teach them about tooth enamel and how food can damage it, using eggs to represent teeth. Let them dunk their eggs into different drinks and see what happens! They’ll be shocked by the results!

Learn More: The Forsyth Institute

33. Lightning in Your Mouth

If you tell your kiddos that they can create lightning in their mouths, it’s likely that they won’t believe you! All you’ll need to prove them wrong is a mirror, a dark room, and some wint-o-green flavored Life Savers to show off some amazing electrical power. Your students will learn about how lightning is made whilst snacking on a delicious treat!

Learn More: Exploratorium

34. Popping Candy

Using another delicious treat, investigate why popping candy pops. Set up some bowls with oil, water, or vinegar, and have your kiddos add the popping candy! All that’s left is to step back and watch the magic happen!

Learn More: Science Sparks

35. Fruit Rot

This one is certainly a stinky experiment! Let your little scientists test to see which fruit rots the quickest and they’ll learn about the ripening process, too. You can try adjusting this experiment to test what substances are the best for preventing fruit rot. Just make sure they don’t eat any of the fruit!

36. What Attracts Insects

If you don’t like creepy crawlies, look away now! In this experiment your learners will set up bug traps to determine what exactly attracts bugs; heat, light, or both! They’ll also discover exactly what kind of heat and light works the best for attracting certain bugs, whilst learning more about the insect life cycle, too.

Learn More: Science Projects

37. Paper Towel Experiment

Which paper towel is the best for absorbing liquid? This super simple experiment is a fantastic way to have your kiddies focus on the scientific method and process. Have them test out different brands of paper towels to test which mops up spills most efficiently! Finally, an experiment that cleans itself up!

Learn More: Explorable

38. Mini Marshmallow Launcher

This is certainly a fun experiment to try! Using a plastic cup cut in half and a balloon, your kiddos will build their very own contraption to launch some mini marshmallows. This activity is a super fun introduction to physics, and we’re pretty sure there will be some taste testing going on here too, in the name of science, of course!

Learn More: Science Fun

39. Paper Airplane

Can your kids come up with the ultimate paper airplane? Let them investigate and discover the best design for a paper airplane by testing out different models for their distance, accuracy, and flight time. You can find many examples of paper airplane designs online, and you can also challenge them to create their own paper airplane designs. Ready for take-off!

Learn More: Science Fair Math

40. Simple Ant Experiment

Take learning outside with this fantastic idea! Have your students find some ants, then place a few different pieces of food nearby. As they come back over the next few hours, they’ll make observations and determine which foods the ants liked best. Just take care to not get bitten! 

Learn More: Mother Natured

41. DIY Taleidoscope

A taleidoscope is just like a kaleidoscope, but without an end to it, meaning that it is perfect for your kiddos to explore the world around them! Challenge them to have a go at making this interesting contraption to learn more about mirrors and light reflection in a fun, hands-on way.

42. Walking on Eggs

You’ll definitely want to do this one outside! By learning to stand in a way that distributes their weight evenly, your students will be able to walk across these eggs without breaking them. It’s a super exciting way for them to learn about weight distribution and the amazing properties of eggs. They’ll soon be ‘ egg-sperts’ on this topic!

43. St Patrick’s Day Fizzing Pot

This experiment is a unique take on the classic volcano experiment but with a St Patrick’s Day twist! Your kiddies will learn about chemical reactions as they predict what will happen when they add baking soda to their vinegar and green food dye mix! Remember to add some golden glitter; a leprechaun’s pot isn’t complete without some gold in it!

Learn More: Little Bins For Little Hands

44. Seed Germinator

Find out about the amazing properties of a humble seed and how they grow! Your little botanists will be able to witness for themselves how seeds turn into seedlings as they let these ones germinate on a petri dish! As the seedlings grow, your kids’ knowledge will too.

45. Naked Egg Experiment

Avert your eyes! These eggs are naked! By making their own “naked” eggs, by placing regular eggs into vinegar, your students will learn about the process of osmosis and chemical reactions! They might even notice that the egg changes size once it’s been stripped of its shell! 

46. Pouring Water Down a String

Your kiddos will be amazed as they watch water walk on a tightrope in this amazing experiment! It’s so easy to try with just a string, an empty clear container, and some water! Soak the string in water then hold it into the glass and see how the water moves down the string. They’ll be exploring surface tension as they marvel at how the water appears to defy gravity!

Learn More: Metro Family Magazine

47. Steady Hands

Create your own “Operation” game right in your classroom with a battery pack and some wires. Have your learners carefully contort the wire to create an obstacle course that they’ll then need to navigate without making contact and setting off a buzzer!

48. Water Color Chemistry

Sometimes known as the iodine clock experiment, this fun activity is a great opportunity to get (gloved) hands-on with some chemicals! Using a variety of chemicals, your kiddos will watch as starch and Vitamin C battle it out; the starch trying to turn the iodine in the mixture blue. What are you waiting for? Grab some safety goggles and get mixing! 

Learn More: Science Bob

49. Cell Phone Stand

This project is super simple and your 6th graders will be sure to find it useful. Have them make their own stands for their cell phones. They’ll love having an easy way to show someone a meme or hold their phone up as they film a TikTok dance. Grab some popsicle sticks and paper clips and get gluing!

50. Floating Ball Trick

Using air and science your learners can make people believe they’re making a ping pong ball float in mid-air! Start them off with a plastic bottle or paper cone, and a straw, and once they’ve assembled it, they can use their breath to make the ball float; so cool!

51. Fidgeting With The Center of Mass

Make this complicated physics topic a little easier to understand for your learners by relating it to the infamous fidget spinner! Using a light-up fidget spinner, your kiddos can experiment by removing some of the lights to change how the mass is distributed. Then you can encourage them to observe any differences in how the toy moves as these changes are made! 

Learn More: From Engineer To SAHM

52. Catapult to First Prize

For this exciting experiment, your kiddos will need to build their own catapult! You can guide them to make one easily out of some recycled materials like some pieces of wood, or a wooden spoon and some paper towel rolls. All that’s left is to grab some objects, take aim, and send them flying!

Learn More: Education Possible

53. Balloon Lungs

Not only is this a fun experiment to make, but it will also teach your kids an important lesson about lung health and safety! Have them cut the bottom off a plastic bottle, then use balloons and straws to create ready-to-inflate lungs. This amazing idea gives them a visual of how our lungs do their job!

Learn More: Surviving A Teacher’s Salary

54. What Do Owls Eat?

Are your kiddos curious about animals, their diet, and their digestion? Well, if they aren’t, they will be soon! Owls are particularly unique in how they swallow and digest their food in that they swallow their food whole, but cannot digest parts like fur or bones. Take your class out in search of some owl pellets and get learning!

Learn More: Gift Of Curiosity

55. Potato Battery

Is a science fair even a science fair if it doesn’t feature this classic science experiment? Have your little scientists explore the electrifying properties of the humble potato! Did you know it also works with any fruit or vegetable high in potassium? Let your class get creative and make some energy!

Learn More: Kidz World

57. Build a DIY Grow Box

If it’s too cold out to grow plants outdoors, have your young scientists build their own grow boxes! Line a box with foil, add a UV lamp, and watch the magic happen! They’ll love the chance to grow a whole host of different plants and monitor their progress.

Learn More: Uplifting Mayhem

58. Purify Water With Charcoal

You’d never think something as dirty as charcoal could actually be used to clean! In this science experiment, your students will discover ways to clean drinking water by creating a filter using activated carbon. This simple experiment will shine a light on the importance of clean drinking water and is sure to be a science fair eye-opener!

Learn More: The Homeschool Scientist

59. Acid Rain Experiment

Simulate the effects of acid rain on plant life in this hands-on science experiment! Let your kiddos observe the effects of this weather phenomenon by observing how plants react when placed in a mini greenhouse containing vinegar versus one containing only water. The results are truly drastic!

Learn More: STEAM Powered Family

60. Build a Barometer

This easy science project encourages your kids to make a barometer to measure air pressure and weather changes! Use household items, including metal cans, wire, and rubber bands, to make to create this scientific instrument and track air pressure along with weather changes. They could even try their hand at predicting the weather!

Learn More: KC Edventures

61. Build a Wave Machine

A few simple materials are all you need to make this ingenious wave machine! These are useful for studying sound waves, energy transfer, frequency, amplitude, and more! A bit of measurement, some skewers, clay, and the versatile roll of duct tape are all your kiddies will need to make this science project come to life.

Learn More: Engaging Science Labs

62. Build a Solar Oven

This classic childhood science project is one that has endured the ages – the solar oven! Pizza boxes, foil, and some plastic wrap turn a simple chunk of cardboard into an amazing experience that teaches your class all about reflection, refraction, heat, and energy. Not to mention, the end result is absolutely delicious! Solar s’mores, anyone?

Learn More: Child Sci

63. Make Mummified Apples

This creepy science project results in a great display that blends history and science! After a bit of research on mummification in your ancient Egyptians topic, let your little ones try out the process on some apples. Have them try out different substances such as salt and baking powder to see which is most effective!

Learn More: Raising Arizona Kids

64.  Popcorn Investigation

Have you ever noticed how different brands of popcorn always produce different amounts of leftover kernels? It’s time to set your learners on a mission to discover which brands produce the most and least amount of waste! Have them work through the scientific process of testing, recording, and comparing in this fun project!

Learn More: K Muska Science

65. Windmill Engineering

This wind-powered science project provides a firsthand look into the power of wind and wind turbines. Using household materials, your young scientists will create a windmill model and engineer it to power a Lego Minifigure Lift. What a great way to encourage perseverance and ingenuity!

66. Learn to Code With Robots

Beginners and enthusiasts alike can never go wrong with a science project that includes coding! Your young coders will show off the process of designing and writing the code for high-tech robots to complete various tasks. This colorful coding mat makes an amazing addition to any science fair display!

Learn More: Facebook

67. Test Sunscreen Effectiveness

A blue-ribbon winning science fair project for anyone who loves a day at the beach.  This project takes a look into the effectiveness of different sunscreens in order to determine which is better to use. This project is a great test of the scientific method and provides a real-world connection that is invaluable info for anyone who visits the booth.

Learn More: Pinterest

68. Research and Compare Sugar Content

This eye-opening science fair project shines a light on the sugar content in what we drink every day. Taking a variety of drinks, your kiddies will predict and measure the actual sugar content of each drink to provide a visual display of the amount of sugar in each brand. This one will definitely make them think twice on their next visit to the vending machine!

69. Play With Magnetism

This fun science project seeks to show your learners the effects of magnetism and ingenuity. Using earth magnets, batteries, and a few other simple materials, this experiment seeks to create a fun spinning top toy that is self-powered, through the presence of a magnetic field! Who said science isn’t like playtime? Definitely not a middle schooler with a rocking science fair project like this!

70. Make Pumpkin Slime

This gross science experiment puts a fun twist on the classic slime-making project. Add water, liquid glue, and liquid start to a healthy serving of pumpkin guts, and watch the magic happen! Your kids will squirm as it morphs into a disgustingly viscous substance that’s perfect for Halloween fun!

71. Baby Product Testing

Some of the best science fair projects are ones that are relevant, valid, and helpful! This science fair project is great for any kids in your class who are big brothers or sisters! Have them dig into the scientific method and determine which diapers are more absorbent and offer more bang for your buck!

Learn More: Kids Out And About

72. Stain Fighting Science

Another promising product-testing science fair project is to determine the usefulness and effectiveness of different cleaning solutions. This project has your kids test different laundry products and use the scientific method to determine the best choice for removing hard-to-clean stains. As an extension activity, add a research project on PFAs.

Learn More: Inspiration Laboratories

73. Test the Five-Second Rule

Ah yes, the timeless ‘five-second rule’. We all know it, and the story goes that any food dropped on the floor is still safe to eat if picked up within five seconds. But is that true? This fun science experiment lets your kiddos test that hypothesis and uncover the real truth behind the five-second myth by analyzing bacteria growth on dropped food products.

Learn More: Sassy Cassy Sews

74. Salty Circuits

Did you know that you can create a model of a circuit using salt? It’s new to us too! This science fair project models how circuits can be created by using salt, liquid watercolor, and a few bits of electrical wire. This is an easy science fair project for kiddos that will definitely light up the judges.

75. Make the Best Cookies Ever!

Everyone loves a cookie, so why not turn them into a science fair project? Get your learners looking into how different amounts and types of fat (butter, shortening, coconut oil, etc) have an effect on the overall taste and texture of a cookie. While it takes some prep and a few rounds of baking, this science fair project is definitely a tasty way to win!

76.  Test Teeth Whiteners

Product testing is always a popular choice for science fair projects. Your students can use a project like this one that uses stained hard-boiled eggs as stand-ins for human teeth. Guide them to come up with a hypothesis, and then test different kinds of toothpaste and teeth whiteners to determine which one is best!

77. Study Sibling Similarities

Do siblings have similar fingerprints? This unique science fair project will see your kiddos take a deep dive into how fingerprint types occur within families and sibling groups. By sampling many family groups, they can discover that fingerprint types are also inherited traits!

Learn More: Easy Peasy Science

78. Just How Greasy Are Those Chips?

If your hands are always covered in grease after eating chips, what does that say about the amount of grease in the whole bag? In this science fair project, your kiddos will aim to prove the amount of fat in chips by removing it and determining its overall weight. It sounds gross, but it’s going to be eye-opening!

79. Science for Sports Fans

The perfect project for your baseball fans! Grab a few different styles of baseball bats and let them complete this experiment to uncover which bats have the capability to hit the furthest. What an amazing way to work through the scientific process for your kinesthetic learners!

80. Tiny Tesla Coils

Tesla coils are amazing devices, but they’re huge and can be quite dangerous. Have your learners bring this down to a manageable experiment by building their own mini Tesla coils with just a few simple materials. This project will surely be a bright spot at the science fair this year!

81. Build a Water Fountain

This STEM-focused project seeks to examine water circulation by using recycled materials to create a homemade water fountain. Plastic bottles, some tubing, and water are just a few resources your kiddies will need to get moving on this amazing idea. 

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55 Terrific 3rd Grade Science Projects Anyone Can Do

Engage students in the classroom, or prep for the science fair!

Want to see your students’ eyes light up? Tell them they’re going to do an experiment! These 3rd grade science projects are easy enough for any classroom or kitchen, and they’re full of science concepts kids need to learn.

To make things even easier, we’ve rated every one of these 3rd grade science experiments based on difficulty and materials:

Difficulty:

• Easy: Low or no-prep experiments you can do pretty much any time
• Medium: These take a little more setup or a longer time to complete
• Advanced: Experiments like these take a fairly big commitment of time or effort
• Basic: Simple items you probably already have around the house
• Medium: Items that you might not already have but are easy to get your hands on
• Advanced: These require specialized or more expensive supplies to complete

3rd Grade Science Fair Projects

3rd grade stem challenge projects, magnet and electricity science experiments for 3rd grade, more 3rd grade science projects and activities.

Use these ideas to build a 3rd grade science fair project. Form your own hypothesis, alter the variables, and see what happens!

Discover the chemistry of slime

Difficulty: Easy / Materials: Medium

Kids adore slime, and it’s actually a terrific way to teach them about polymers. Learn the basics of slime chemistry, then experiment with the formula to make your own unique concoctions.

Make sun prints to display

You’ll need special sun-print paper for this project, but it’s inexpensive and easy to find. Kids learn about chemical reactions as they use the power of the sun to create unique works of art.

Experiment with ice, salt, and water temperature

Difficulty: Easy / Materials: Basic

This simple experiment requires only water, ice, salt, and a thermometer. Your 3rd grade science class can explore how ice and salt affect the temperature, a simple but effective lesson on heat transfer and freezing points.

Learn more: Ice, Salt, and Temperature at 123 Homeschool 4 Me

Experiment with colors

Play around with colors, mix them together, and then use a little science magic to pull them apart again. This chromatography science project requires only simple supplies like coffee filters and markers.

Learn more: Chromatography at 123 Homeschool 4 Me

Understand the science behind bath bombs

Difficulty: Medium / Materials: Medium

Bath bombs certainly make bath time more fun, but what makes them work? Explore chemical reactions and get squeaky clean all at the same time!

Learn more: Bath Bomb Science at Learning Hypothesis

Investigate the effects of erosion

Compare the effects of “rain” on hills of bare soil vs. those covered with grass. Have your 3rd grade science students predict which they think will stand up to erosion better and then test their hypotheses.

Learn more: Erosion Experiment at Third Grade Thinkers

Give flowers a glow-up

This one will make kids’ eyes pop out of their heads! Use highlighters and a black-light flashlight to reveal the vascular system of flowers.

Learn more: Plant’s Vascular System at Tamara “Tamawi” Horne

Grow bacteria from common surfaces

There’s never been a better time to learn about the way germs spread! Take samples from a variety of surfaces, then watch bacteria grow in petri dishes just like grown-up scientists.

Learn more: Growing Germs at Happiness Is Here

Take friction for a ride

Your students will love pulling their way across the floor as they discover more about friction and its effects on motion. Build your own “sled” or use a premade box or tray.

Craft fossils from glue

Create clay molds of natural objects, then fill them with school glue to make your own “fossil” casts. This is a great project to try before a trip to the natural history museum.

Learn more: Glue Fossils at Education.com

Go green with recycled paper

We talk a lot about recycling and sustainability these days, so show kids how it’s done! Recycle old worksheets or other papers using screen and picture frames.

Learn more: Recycled Paper at Undercover Classroom

Filter sediment from dirty water

Explore sediments and water filtration with this easy 3rd grade science experiment. It’s a fun way to learn more about the water cycle.

Learn more: Water Filtration at Teach Beside Me

Put together a compost bottle

Learn about the decomposition of food and how composting can provide nutrients for growing more food with this easy earth science project.

Learn more: Soda Bottle Compost at Busy Mommy Media

Sprout new potatoes

Potatoes grow from tuberous roots, and under the right conditions, new shoots appear from those roots. This 3rd grade science experiment explores the biological science behind cloning.

Use flowers to learn about acid rain

Have you ever wondered what happens to plants when they are exposed to acid rain? Your students can find out by conducting a simple acid rain experiment using flowers and vinegar!

Learn more: Acid Rain Experiment at Little Bins for Little Hands

Keep apples from turning brown

What’s the best method to keep sliced apples from turning brown? Find out with this popular 3rd grade science project.

Learn more: Apple Browning at Teach Beside Me

Fizz it up with antacid

Fizzy fantastic fun! Learn about chemical reactions by mixing water and effervescent antacid tablets to see what happens, comparing the time it takes for whole tablets and small pieces.

Drop objects to learn about gravity

Do heavier objects fall faster than lighter ones? Try this hands-on gravity activity for 3rd graders to find out!

Use these STEM challenges as the basis for science fair project ideas, or try them as in-class science activities your 3rd graders will love!

Design a candy-delivery machine

Learn about inclined planes with this fun simple-machines project. Kids can get creative and develop any kind of delivery system they like!

Learn more: Candy Machine at 123 Homeschool 4 Me

Determine the most waterproof roof

Calling all future engineers! Build a house from LEGO, then experiment to see what type of roof prevents water from leaking inside.

Learn more: Waterproof Roof at Science Sparks

Run marble races with pool noodles

Crack open a pool noodle or two and create your own marble racetracks. Experiment with angles, force, and surface materials to find the fastest way to get the marble to the bottom. ( Find more fun ways to use pool noodles in the classroom here. )

Learn more: Pool Noodle Marble Races at The Techy Teacher

Build a better umbrella

Challenge students to engineer the best possible umbrella from various household supplies. Encourage them to plan, draw blueprints, and test their creations, using the scientific method.

Learn more: Best Umbrella STEM Challenge at Raising Lifelong Learners

Construct a marshmallow catapult

Fling some sweet treats in the name of science! All you need is an old tissue box, pencils, rubber bands, and a few other supplies to learn about trajectory, air resistance, gravity, and more.

Learn more: Tissue Box Catapult at Frugal Fun for Boys and Girls

Blow through a water whistle

Learn about the science of sound with this easy experiment. Kids will love building their own whistles from straws and a glass of water.

Learn more: Water Whistle at My Baba

Step through an index card

With carefully placed scissor cuts on an index card, you can make a loop large enough to fit a (small) human body through! Kids will be wowed as they learn about surface area.

Learn more: Index Card Experiment at Mess for Less

Construct a Hero’s engine

Difficulty: Medium / Materials: Basic

Sir Isaac Newton came up with rules about how things work in the world. One of these rules is called Newton’s third law. It says that “for every action, there is an equal and opposite reaction.” Do an experiment with your 3rd graders to learn more about this rule!

Model the effect of air drag

To learn about the role of drag in flight, students can fold paper planes in different styles and observe how these changes affect the distance and flight pattern of the planes. Turn this 3rd grade science project into a fun competition to see which plane flies the farthest or stays in the air the longest.

Put together an anemometer

This very simple weather instrument is easy enough for kids to build, allowing them to observe and think like a real meteorologist.

These shocking (OK, not literally!) electricity experiments will fit nicely into many 3rd grade science curriculum programs. Give them a try in the classroom, or encourage an interest in science at home.

Assemble a simple circuit

To test the conductivity of different materials, your students can use a simple electric circuit. Invest in a few of these inexpensive gadgets to allow for all kinds of 3rd grade science projects.

Learn more: Simple Circuits at Science Projects

Turn a safety pin into a circuit

Looking for an even easier simple circuits project? This one requires only a few supplies you can grab at the hardware store and an ordinary everyday safety pin.

Investigate how liquids affect magnets

Are magnets equally effective in water? What about oil or a thicker liquid like, say, a milkshake? This would make for an easy 3rd grade science fair project that’s fun too.

Ask a magnet to dance

This is so cool! Make a magnet dance without touching it in this activity that’s part STEM challenge, part magnet experiment, and 100% amazing.

Capture lightning in a bottle

Well, it’s not quite that dramatic, but this cool electricity experiment for 3rd grade will still wow your students.

Separate salt and pepper with static electricity

When you mix up salt and pepper, you’d think it would be almost impossible to separate them again. But using a little static electricity and a plastic spoon, it’s surprisingly simple.

Learn more: Separate Salt and Pepper at Science Kiddo

Explore static electricity with jumping goop

Your students have probably tried rubbing a balloon on their heads to create static electricity with their hair. This experiment is even cooler to see, as a mix of cornstarch and oil seems to leap off the spoon in front of their eyes!

Learn more: Static Electricity Goop at Frugal Fun for Boys and Girls

Predict the distance of lightning

This weather science experiment never fails to impress. Use a stopwatch to measure the difference between the flash and the sound of lightning and thunder, then calculate the distance between you and the strike.

Find your way with a DIY compass

Here’s an old classic that never fails to impress. Magnetize a needle and float it on the water’s surface—it will always point north.

Learn more: DIY Compass at STEAM Powered Family

Defy gravity with magnets and paper clips

Magnets are always a hit in the classroom. Use this simple experiment to discover more about gravity and the effects of magnets on metal objects.

Learn more: Magnet Gravity at Buggy and Buddy

These science experiments for 3rd graders explore all sorts of concepts, from the laws of motion to earth and planetary science and beyond.

Flick pennies to learn about inertia

This is one of those science experiments that kind of looks like magic, but it’s really all about the laws of motion. It might take a little practice to get the index card flick just right, but the results are always cool!

Learn more: Penny Inertia at Frugal Fun for Boys and Girls

See the temperature rise in a chemical reaction

When iron meets oxygen, rust forms. Use vinegar to remove the protective coat from steel wool  and watch the temperature rise from the chemical reaction.

Learn more: Thermal Reaction at 123 Homeschool 4 Me

Float an iceberg

Use a balloon to make an iceberg, then float it in a dish of water to learn how much you can see above and below the waterline. Try experimenting with salt water to see how the density changes things.

Learn more: Icebergs at Science Sparks

Take a Play-Doh core sample

Learn about the layers of the Earth by building them out of Play-Doh. Then students can take a core sample with a straw. ( Love Play-Doh? Get more learning ideas here. )

Learn more: Core Sampling at Line Upon Line Learning

Spin a disappearing color wheel

Color a paper disk with the six primary and secondary colors. Then thread a string through the middle and make it spin. The colors will seem to disappear!

Crystallize some pretty fall leaves

Every kid loves making crystals. In this 3rd grade science project, learn about supersaturated solutions by crystallizing some colorful fall leaves. Then use them as fall classroom decor!

Learn more: Salt Crystal Leaves at STEAMsational

Find a robot’s center of gravity

Print out, cut, and color this free paper robot. Then glue some coins to the back and have your students try to find its center of gravity!

Learn more: Balancing Robot at Buggy and Buddy

Make your own bouncing bubbles

Have your 3rd grade science students put on gloves and watch the bubbles bounce! Then encourage them to experiment with their own bubble solution. Try different soaps, mixing up the ratios to make the strongest bubble possible.

Project the stars on your ceiling

Use the video lesson in the link below to teach 3rd grade science students why stars are only visible at night. Then create a DIY star projector to explore the concept hands-on.

Learn more: Star Projector at Mystery Science

Blow bubbles inside bubbles inside bubbles

If there’s a more fun 3rd grade science project about surface tension than bubbles, we haven’t found it yet! Create a soap solution by using dissolved sugar and discover more about elasticity and volume as you blow bubbles inside bubbles inside bubbles …

Use water balloons to explore buoyancy

Fill water balloons with different solutions (oil, salt water, plain water, etc.) and place the balloons in a large bucket of water to see if they sink or float. This is a cool project to do with your 3rd grade science class on the playground on a sunny day.

Learn more: Balloon Density at 123 Homeschool 4 Me

Learn how water temperature affects density

Looking for a simple, quick, and colorful science experiment? This one just requires some mason jars , hot and cold water, and food coloring . Kids will be amazed at the results!

Learn more: Water Density Experiment at STEAMsational

Dissolve cups to learn about types of change

Teach your 3rd grade science class about the differences between physical and chemical changes with this quick and easy experiment involving Styrofoam cups.

Learn more: Dissolving Cups at The Owl Teacher

Turn crayons into rocks

Demonstrate the effects of heat and pressure on crayon shavings to explain the different types of rocks to students. It’s a colorful intro to geology!

Learn more: Crayon Rocks at The Owl Teacher

 Stab a straw through a potato

Plastic straws may seem flimsy, but by using the power of air pressure, you can make one strong enough to stab all the way through a potato!

Learn more: Stab a Potato at KiwiCo

Shake up some ice cream

Get kids up and moving when they shake their way to ice cream, made from scratch using ice and plastic zipper bags! Talk about heating and cooling as well as condensation while you enjoy your snack.

Learn more: Ice Cream in a Bag at Mom of 6

Examine pine cones opening and closing

Pine cones can sense changes in humidity and adjust their scales in response. Gather several pine cones, glass containers, tweezers, and both hot and cold water to conduct a fun experiment to discover what makes pine cones open and close.

Learn more: Pine Cone Experiment at Parenting Chaos

If you liked these 3rd grade science projects, keep up the STEM enthusiasm with these fun and engaging 3rd grade math games .

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