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100 Science Fair Projects For 6th Graders

100 Science Fair Projects For 6th Graders

Our collection of 6th grade science fair projects offers a fun and interesting way for 6th graders to explore a variety of fascinating scientific topics.

Is a dog's mouth cleaner than a human's?
Do humans or dogs have more bacteria in their mouth? This fun science project will help you discover the answer by exploring the bacteria in both a dog's mouth and ...
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Burn Rate of a Candle
Does the temperature of a room affect how quickly a candle burns? Find out in this science project!
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Fast Food Nutrition
Are you curious about what's really in your fast food? Find out by conducting this experiment!
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Soap and Surface Tension
Learn how soap can break the surface tension of water and mix oil and water together!
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Does Music Help Plants Grow?
Can plants grow better when they listen to classical music? Find out in this experiment!
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Baking with Yeast
Learn how yeast helps make bread rise and become fluffy!
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Plant Growth: Hydroponics vs. Soil
Can plants grow faster when grown hydroponically instead of in soil? Find out in this experiment!
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Singing Glass
Make music with water and a glass! Learn how to turn a drinking glass into an instrument.
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Grow Your Own Crystal Garden
Create a beautiful crystal garden with just a few simple ingredients and a little patience!
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Moisturizer Test
Let's find out which body lotion will keep the most moisture from evaporating!
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How to Make Oobleck: Is it a Liquid or Solid?
Get your hands messy with this mysterious substance! Is it a liquid or a solid? Mix, squish and play to uncover its secrets!
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Electricity from a Lemon
Discover the incredible power of lemons! With lemons and basic materials, you can create an eco-friendly battery that powers an LED light!
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Magic Milk Painting
See colors magically move in milk with soap! This fun experiment demonstrates surface tension in a vivid way!
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Static Electricity: What's Attracting?
Have you ever wondered what materials have the most static electricity? Find out by rubbing a balloon on different materials and counting how many pieces of paper it attracts!
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Rock Candy: Sweet Science
Get ready to become a candy-making scientist! Grow your own giant sugar crystals and make rock candy you can eat!
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My Pet Rock in the Rock Cycle
Curious about pet rocks? Make some and learn about the rock cycle in the process!
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Rock Hardness Challenge
How hard is that rock? You can learn how to classify your own rocks by their hardness just like geologists!
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Starburst Rock Cycle
Make delicious rock formations using Starbursts! Learn how the earth makes rocks in a tasty way.
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Geode Rock Borax Crystal
Make your own sparkling geode rock crystals at home with Borax and see science in action!
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Crayon Rock Cycle
Discover how to make your own sedimentary, metamorphic, and igneous rocks using crayons!
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The Chocolate Rock Cycle
Have you ever heard of rocks made of chocolate? Learn how rocks can be turned into a sweet treat in this delicious science project!
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Sparkling Rainbow Crystal
Make your own sparkling rainbow crystals at home with Borax and see science in action!
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Solar System Scale Model on the Sidewalk
Create your own solar system model to scale on the sidewalk and take a walk through space!
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Windy Wonders: Plant Growth
Have you ever wondered how wind affects plants? In this experiment, you'll find out by comparing two plants in different wind conditions.
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Color and Taste
Do you think the color of a beverage affects how it tastes?
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Uncovering Fall 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!
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Can Exercise Improve Test Scores?
Does physical activity before an exam help you do better?
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Baking Soda Volcano
Create a fizzing, bubbling reaction with baking soda and vinegar! Learn about acid-base reactions and have fun while doing it!
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Explosive Elephant Toothpaste
Get ready to create a massive, bubbling tube of toothpaste using only a few simple ingredients! Don't miss out on the fun!
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Growing Mold
What kinds of food does mold grow fastest on?
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Plastic Milk
Make your own plastic milk from household items!
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Cloud in a Bottle
With just a few simple steps, creating a cloud in a jar can help us understand the process of cloud formation!
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The Effect of Temperature on Fingerprints
Have you ever wondered how temperature affects fingerprints? Find out in this science project!
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Bicycle Helmet Shock Absorption
Do more expensive bicycle helmets absorb more shock?
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Glowing in the Dark
Have you ever wondered how to make glow-in-the-dark stickers glow longer?
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Slowing Ice Melting with Reflective Containers
Can you keep ice from melting without a cooler box? Find out how reflective containers can help!
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Staining Teeth with Beverages
Let's find out which beverage leaves the most stains on our teeth!
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Hand-Eye Coordination and Age
Does age affect how well you can catch a ball?
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Acidifying Our Oceans
Let's explore how carbon dioxide affects the acidity of our oceans!
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Acid Rain and Guppies
Can acid rain hurt guppies?
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The Effects of Sea Water on Bamboo
Can sea water help or hurt bamboo plants? Find out in this experiment!
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How Temperature Affects Taste
Do you like your food hot or cold? Find out how temperature affects your taste buds in this fun experiment!
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Soap Bubbles in Carbon Dioxide
Have you ever wondered how long soap bubbles can stay afloat in carbon dioxide? Let's find out!
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Temperature and Solubility
Let's explore how temperature affects the amount of substances that can be dissolved in water!
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Do Singers Have Bigger Lungs?
Do you have what it takes to blow up a balloon bigger than your friends? Find out if singers have bigger lungs than non-singers!
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Exploring Cave Formations
Discover how stalactites and stalagmites form in caves with this fun experiment!
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Building Strong Bridges
Learn how to build bridges that can hold a lot of weight using triangles and squares!
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Are You Fit?
Find out if you have the lungs of an athlete by testing your lung capacity with the water displacement method!
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Exploring the Kingdoms of Life
Take a journey into a drop of water and explore the five kingdoms of life!
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Investigating Insects on Trees
Join us on an adventure to explore the different kinds of insects living on three different species of trees!
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The Impact of Plant Communities
Discover how different types of plants can affect the biodiversity of a region!
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Gender Differences in Lung Capacity
Find out if boys have a higher or lower lung volume than girls in this fun experiment!
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Investigating Water Loss in Plants
Let's explore how much water plants lose through transpiration and see if bigger leaves mean more water loss!
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Can Nasal Dilators Stop Snoring?
Does your snoring keep you or your family up at night? Find out if nasal dilators can help you get a better night's sleep!
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Investigating Baby Food Contamination
Let's find out what happens when baby food is left out of the fridge for different amounts of time!
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Boiling Point of Water
Let's explore how the boiling point of water changes in different conditions!
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Baseball Batting: Indoor vs. Outdoor
Does the type of stadium affect how far a baseball can be hit? Find out in this fun science project!
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Getting Rid of Dust Mites
Have you ever wondered how to get rid of dust mites? This science project will show you the best way to get rid of these pesky bugs!
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Plant Density and Growth Rate
Plant some seeds and watch them grow! See how the number of plants affects their growth rate.
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Red Bull and Daphnia
Can Red Bull make water fleas beat faster? Find out in this science project!
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Testing Fabric Types for Water Resistance
Can you make fabric waterproof? Find out by testing different fabrics with and without Scotch Guard!
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Aspirin Absorption in Carbohydrate Solutions
Let's find out how carbohydrates affect the rate of aspirin dissolution!
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Aircraft Noise: Take Off vs. Landing
Do aircraft make more noise when taking off or when landing? Find out in this fun science project!
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Soil Types and Water Retention
Find out which type of soil retains the most water in this fun science project!
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The Effects of Gasoline Fumes on Plants
Can gasoline fumes kill plants? Find out in this science project!
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Glow Sticks: Temperature Effects
Let's explore how temperature affects the light from glow sticks!
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Temperature and Thermometers
Have you ever wondered how different thermometers measure body temperature? Find out in this science project!
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Oil Spills and Aquatic Plants
What happens when oil spills on water? Does it affect the plants living in the water? Let's find out!
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The Acidification of Oceans
Can aquatic plants help reduce the acidity of our oceans? Find out in this fun science project!
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Natural Pesticides and Termites
Can natural substances like borax and vinegar keep termites away? Find out in this science project!
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Nail Polish Durability
Does your nail polish chip off too quickly? Find out which type of nail polish lasts the longest with this fun science project!
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What Colors Attract Birds?
Do you want to know what colors birds like? Find out by setting up bird feeders in different colors and see which one they prefer!
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Investigating Football Helmets
Let's find out how football helmets protect players from head injuries by testing the pressure of the padding inside the helmet!
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Burning Speed of Scented and Unscented Candles
Let's find out if scented candles burn faster than unscented ones!
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Body Symmetry and Athletic Performance
Do athletes have more symmetrical bodies than non-athletes? Find out in this science project!
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Investigating Bacteria Growth Inhibition
Let's explore how different concentrations of acid and alkaline solutions affect the growth of bacteria!
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Left-Handed Ambidexterity
Are you left-handed? Do you have the ability to use both hands equally well? Let's find out!
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Investigating Earthquake Displacement
Join us in a science experiment to explore how seismic activity affects the displacement of bones in soil!
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Battery Life and Temperature
Does temperature affect how long a battery lasts? Find out in this fun science project!
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Cleaning Up Oil Spills with Elodea
Can Elodea plants help clean up oil spills? Find out in this science project!
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Carbonation and Packaging
Does the packaging of a soft drink affect the amount of carbonation? Find out in this fun science project!
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Testing Building Materials in Earthquake-Prone Areas
Can you build a house that can withstand an earthquake? Find out by testing different building materials in this science project!
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Investigating Boatyard Pollution
Let's explore how antifouling paint affects the environment and marine life by testing water samples from a boatyard!
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Bread Mold: The Experiment
Have you ever wondered what happens when you leave a slice of bread out for a few days? Find out in this science project!
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Snow Pollution
Have you ever wondered what's in the snow? Let's find out by collecting snow samples from different locations and testing them for pollutants!
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Color and Comprehension
Can the color of text affect how well you understand it? Let's find out!
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Wind Speed and Altitude
Measure the wind speed at different heights and see how it changes!
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Investigating Water Surface Tension
Let's explore how salt and temperature affect the surface tension of water!
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Friction and Speed
Test how different surfaces affect the speed of cars!
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Soil Fertility and Conductivity
Let's explore how soil fertility affects electrical conductivity!
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Testing Lead Content in Drinking Water
Let's find out if older houses have more lead in their drinking water than newer houses!
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Does Bounciness Affect Golf Ball Distance?
Does a bouncier golf ball travel further than a less bouncy one? Find out in this science project!
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Left-Handedness and Mirror Writing
Are left-handers better at mirror writing than right-handers? Find out in this fun science project!
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Crash Barrel Effectiveness
Can paper cups filled with water and sand absorb more impact during a collision? Find out in this science project!
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Investigating Cinnamon Oil as an Insect Repellent
Do you want to know if cinnamon oil can keep insects away? Join us in this science project to find out!
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Keeping Warm with Fabric
Do you want to know which fabric keeps you the warmest? Find out in this science project!
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The Effect of Water Hardness on Seed Germination
Does watering plants with soft water help seeds germinate faster? Find out in this science project!
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Battery Life in Extreme Temperatures
Does extreme cold or heat affect how long a battery can power a fan? Find out in this science project!
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Gender and Peer Pressure
Do boys and girls respond differently to peer pressure? Find out in this science project!
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Temperature and Magnets
Let's explore how temperature affects the strength of magnets!
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6th Grade Science Fair Project FAQ


What are some easy 6th grade science fair projects?

Any one of these easy 6th grade science fair projects will teach you important scientific concepts and help you have fun while learning. An easy science fair project is a great way to introduce the wonders of science to 6th graders!

  • Burn Rate of a Candle

  • Soap and Surface Tension

  • Baking with Yeast

  • Color and Taste

  • Growing Mold

  • Staining Teeth with Beverages

  • Investigating Insects on Trees

  • Electrifying Lemon Battery

  • Uncovering Fall Colors

  • Making Oobleck: Liquid or Solid?

Science fair project details right above the FAQ!


What is the best 6th grade science project ever?

We love the Fast Food Nutrition science fair project for 6th graders. This project challenges students to explore the nutritional value of fast food that's easily available. By investigating what's in these meals and interviewing people about their eating habits, they can learn a lot about what we're putting into our bodies.

If you're looking for more 6th grade science projects, check out the 6th grade science fair projects at the top of this page! 

Check out more Best Science Fair Projects


What are some cool 6th grade science fair projects?

Get ready to be amazed by these super cool science projects for 6th graders! With just a few simple things, you can be fascinated by science and have tons of fun with these cool 6th grade science projects!

  • Does Music Help Plants Grow?

  • Dogs vs. Humans: Bacteria in the Mouth

  • Singing Glass

  • Burn Rate of a Candle

  • Fast Food Nutrition

  • Soap and Surface Tension

  • Baking with Yeast

  • Plant Growth: Hydroponics vs. Soil

  • Growing Your Own Crystal Garden

  • Moisturizer Test

Science fair project details right above the FAQ!


What are 5 testable questions for 6th 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!

  • What makes a cloud form?

  • 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 6th grade?

These are our top 10 science projects for 6th grade, with projects from Biology, Chemistry, Physics, Medicine and Health. These projects can be used as science fair project ideas or as a fun experiment to explore different areas of science!

  • Dogs vs. Humans: Bacteria in the Mouth

  • Burn Rate of a Candle

  • Fast Food Nutrition

  • Soap and Surface Tension

  • Does Music Help Plants Grow?

  • Baking with Yeast

  • Plant Growth: Hydroponics vs. Soil

  • Singing Glass

  • Growing Your Own Crystal Garden

  • Moisturizer Test

Science project details above the FAQ!


Can I do a 6th grade science fair project in a day?

Yes! Quick experiments can be a great option for a science fair project! If you want to explore quick reactions, we have science project ideas on various topics to get you started.

  • Acids and bases: Test different fluids to see if they are an acid or a base!

Learn how to make your own acid/base indicator using red cabbage and use it to test different fluids! Make Your Own PH Indicator

  • Chromatography reactions: Separate 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!

Ever wondered if a balloon filled with water can withstand fire? Fire-Resistant Balloons


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

Science museums are great places to explore if you're looking for inspiration for your next science fair project or just want to learn more about science. Science museums, natural history museums, space museums, and discovery museums are all great places to do that! You can discover all sorts of interesting things about science and find cool project ideas for science fairs.

Don't worry about how much it costs to get into the science museum, as there may be free admission days or free passes to a science museum near you! Check your credit card for offers, your local library for free museum passes, and nearby science museums for free entrance days.

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?

Science fair projects are a fun and unique way to discover science by asking a question and doing a science project. We'll help you find a science fair project idea and guide you through the process of doing and presenting your science fair project with Science Fair Coach's Science Fair Project Guide.


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

If you have a science fair project idea, Science Fair Coach can help you turn it into a full science fair project! Starting at Science Fair Coach's Guide to the Scientific Method, we'll guide you through every step of the scientific method, from designing and conducting your experiment to collecting and analyzing your findings. Then, we'll help you showcase your results on a science fair board for others to learn from and enjoy.


How do I make a science fair board?

Your science fair board is where you show off your science fair project for everyone to see and learn from. With Science Fair Coach's step-by-step guide, you can make sure your science fair board stands out and impresses at the science fair!


Where can I find a science fair competition?

Science fair competitions are an excellent opportunity to explore science. One of the of the premier science advocacy organizations, the Society for Science, is associated with more than 400 science fair competitions in almost every US state, as well as over 70 other countries, regions, and territories. You can find out if there's a Society of Science affiliated science fair near you!

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 even virtual competitions!

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