75 Science Fair Projects for 8th Graders
Can DNA be taken out of the cell? We'll find out using an onion! (Check out the video where DNA is taken out of strawberries!)
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Learn how to grow a new plant from a piece of an existing one!
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Let's find out which acne medications are the most effective against bacteria that cause acne!
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Learn how soap can break the surface tension of water and mix oil and water together!
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Have you ever wondered how to make glow-in-the-dark stickers glow longer?
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Can you make fabric waterproof? Find out by testing different fabrics with and without Scotch Guard!
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Let's explore how temperature affects the amount of substances that can be dissolved in water!
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See the sun like never before! View sunspots through a telescope or a homemade 'pinhole camera' and explore the sun's surface.
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Let's explore how different surfaces affect the temperature increase due to the greenhouse effect!
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Make your own sparkling geode rock crystals at home with Borax and see science in action!
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Have you ever heard of rocks made of chocolate? Use chocolate to learn about the rock cycle in this delicious science project!
Easy
Learn how to build bridges that can hold a lot of weight using triangles and squares!
Medium
Make a high voltage motor in just 5 minutes with everyday items!
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Do you want to know when hamsters are most alert? Find out by timing how long it takes a hamster to negotiate a maze at different times of day!
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Learn how probability works by rolling dice and seeing what numbers come up!
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Make music with water and a glass! Learn how to turn a drinking glass into an instrument.
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Do you ever wonder how sleep affects your body? Find out by conducting an experiment to measure your vital signs while you sleep!
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Can you tell what someone is feeling just by looking at their face? Find out in this fun science project!
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Are you curious about what's really in your fast food? Find out by conducting this experiment!
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How does time pass for you? Is it the same for everyone? Let's find out!
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How hard is that rock? You can learn how to classify your own rocks by their hardness just like geologists!
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Can plants grow faster when grown hydroponically instead of in soil? Find out in this experiment!
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Let's find out if cooking fruits and vegetables depletes their Vitamin C content!
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Do different brands of orange juice contain different levels of vitamin C? Find out by testing different types of orange juice and measuring the amount of vitamin C in each!
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Learn how soil can act like an electrical system and how it can be used to attract and hold plant nutrients.
Hard
Have you ever seen a bubble that's made of air instead of water? Learn how to make your own underwater antibubbles!
Hard
Have you ever wondered why the sky is blue? Let's find out by using a flashlight, glue sticks, and polarizing filters!
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Can plants grow better when they listen to classical music? Find out in this experiment!
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Can magnets affect the growth of radish seedlings? Find out in this fun experiment!
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Does acid rain affect the germination of carrot seeds? Let's find out!
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Learn how to cook meat to get the best yield and composition!
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Let's explore how much rain and snow falls in different parts of the US!
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Can you figure out which color light will shine the brightest through a foggy liquid?
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Can you figure out the best way to get the most power from the sun?
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Can air pressure push an egg into a bottle? Find out in this fun experiment!
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Ever wondered how fast sound travels? Find out with this fun science project!
Hard
Can you tell the difference between regular and low-fat foods? Find out in this fun science project!
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Create a spooky, mysterious fog in a bottle with just two bottles, hot and cold water, and an ice cube!
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Let's see if two different growth hormones can help plants grow faster!
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Learn how temperature and salinity interact by testing the salinity of water in three jars at different temperatures!
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Does exercise help you remember better? Find out in this fun science project!
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Are you fast enough to beat the clock? Find out by testing your reaction time with this fun science project!
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Do you want to find out if processed foods produce gas? Join us in this experiment to find out!
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Have you ever wondered how fireflies are able to create their own light? Learn how fireflies use their unique ability to survive and how this process can be used to ...
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Can you remember what you see on TV? Find out with this fun science experiment!
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Discover the incredible power of lemons! With lemons and basic materials, you can create an eco-friendly battery that powers an LED light!
Easy
Explore this fascinating egg experiment with vinegar that makes a bouncy egg! Discover the science of acid and base chemical reactions and protein denaturation!
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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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Explore the solar system with fruits! Pick which fruit represents each planet based on their size, then order them according to their distances from the sun.
Easy
This simple Oobleck recipe of cornstarch and water is a fun introduction to the complex science of non-Newtonian fluids!
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Make your own sparkling rainbow crystals at home with Borax and see science in action!
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See colors magically move in milk with soap! This fun experiment demonstrates surface tension in a vivid way!
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Build a mini version of our solar system with planets made from play dough or foil and a balloon sun. Discover the wonders of space!
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Ever wanted to hold the solar system in your hands? With this project, you can build your own pocket-sized model!
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Can you make a pipe cleaner foil bug walk on water? Find out with this engineering challenge by building your own water strider and exploring the science of surface tension.
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Explore our solar system with Play-doh! Make a scale model of planets and moons and learn about their size and distance from each other.
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Have you ever wondered how big the Sun really is? See how many Earths can go across the Sun!
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Can your favorite drinks harm your teeth? Find out using hard boiled eggs in this science project!
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Ever wondered how water can break rocks? Discover the power of ice in this exciting experiment on weathering!
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Mix cornstarch and water to make quicksand and see if your hands sink!
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Find out if rocks have calcium carbonate, also known as calcite, in them with a simple fizz test!
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Can some rocks hold more oil, gas and water than others? Find out in this rock porosity and permeability experiment!
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Rocks are irregularly shaped. How can you measure the density of a rock? (Density = weight / volume) Discover the answer by using water displacement and weighing the rock to ...
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Curious about pet rocks? Make some and learn about the rock cycle in the process!
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Make delicious rock formations using Starbursts! Learn how the earth makes rocks in a tasty way.
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Discover how to make your own sedimentary, metamorphic, and igneous rocks using crayons!
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Create your own solar system model to scale on the sidewalk and take a walk through space!
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Can you protect a raw egg from breaking when dropped from high up? Have fun in this engineering challenge!
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Science makes it possible to cook spaghetti in just a minute! Soak it first, then cook in a flash. Save the planet while enjoying your favorite dish!
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Watch as changing colors swirl and dance in this mesmerizing lava lamp experiment using red cabbage juice and Alka-Seltzer tablets. Discover the secrets of pH indicators and fizzy reactions!
Medium
Let's see which paper airplane can fly the farthest! Fold, decorate, and launch your own planes to find the winning design.
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