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The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Science fair project that teaches you key definitions of molecular science, and how different isotopes of an element affect the relative atomic mass.

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

Boiling water in a paper cup is possible because of convection and the thermal properties of water and paper. Learn how with this fun science fair project idea.

This science fair project determines if the allelopathic chemical produced by the black walnut tree biodegrades immediately or persists over several days.

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

The purpose of this science project is to determine which chemical best lowers the temperature of water in a cold pack and if the amount affects its use.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

What is the Doppler Effect, or the Doppler Shift? The purpose of this science fair project is to determine how distance impacts the Doppler Effect.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Science fair project that demonstrates the principle of conservation of mass by conducting a chemical reaction inside a sealed Ziploc bag.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Do heavier objects fall faster than lighter ones? Students learn the answer by watching the effect gravity in a vacuum has on a coin and a feather.

High school students recreate Michael Faraday's experiment in this cool science fair project that induces current in a coil of wire.

Science fair project which determines whether your current calorie intake will cause you to lose or gain weight over time.

This conservation of energy demonstration shows why the first hill is the highest on a roller coaster. Learn more about potential and kinetic energy!

In this fun science experiment, make a balloon car and test it on different surfaces to learn about sliding friction and rolling friction.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

Investigate the kinds of memories we tend to store and the emotions we store with them. Determine if memories have a strong emotional component.

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

How much gas is released into your stomach by your favorite beverages? This project examines which beverages produce the most gas.

This science fair project idea determines whether eating before or after exercise is more beneficial to health and performance.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.