What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

This science fair project idea examines which type of insulation holds in the most heat.

In this fun experiment, we'll find out how color affects heat absorption!

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

Examine the effect of pressure on carbonation in soda.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

This science fair project idea determines the most effective method of preserving food.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

This science fair project idea determines the operating differences of AAA, AA, C, D batteries all with a 1.5 volt rating.

This science fair project idea examines whether boys and girls differ in reflexes.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.