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The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

Science fair project that explains and demonstrates the parallax principle.

This science fair project idea compares whether ionic dryers leave hair in better condition than non-ionic dryers.

Science fair project idea examines different techniques for memorization. Analyze results of memory tests to determine which method is most effective.

This science project has students study the idea of human beauty.

Explore the effect of wind speed on the burning rate of a candle.

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

Science fair project that uses iodine solution to demonstrate how starch is turned into sugar when it is chewed in the mouth.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

In this science fair project, students create their own miniature salt flats at home.

Teach kids about a fun way they can remember this more efficiently- the power of mnemonics. Kids will be amazed.

This experiment uses a voice recorder to monitor the progression of a message in the telephone game as it deviates from the original.

Science fair project that determines whether disinfectant sprays or disinfectant soaps are more effective at removing bacteria from hands.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Determine how proficient you are at making estimations and learn how to make more reasonable estimates.

Get a cool middle school chemistry project idea on how to determine whether a physical or a chemical change has taken place.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

Find out whether freezing or refrigerating destroys more bacteria. This is essential to consuming safe and germ-free food.

Science fair project that designs a video game that requires players to use relevant skills.

This cool physics demo illustrates the simple harmonic motion of a pendulum while teaching kids the important concepts of potential and kinetic energy.

This science fair project idea explores the different properties & interactions of sugar molecules.

Science fair project that examines condensation and the conditions needed in order for dew to form.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.