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.

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 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.

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.

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.

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 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 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.

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

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

This science fair project idea identifies clouds as a means of predicting the weather.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.