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What direction should solar panels face? It's not the direction you might think! This free and enlightening science fair project helps kids discover the answer.

In this science experiment, test the pH of soil surrounding a gas station to determine if gas stations have a negative effect on the environment.

Check out this cool science fair project on identifying rocks and minerals for kids.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

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 about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

The apparent movement of the sun has been used to keep time since the bronze age. In this science fair project, kids plot solar time against mean solar time.

What is a barycenter? Kids learn how gravity and mass influence the orbit of binary systems like planets and moons or stars and planets in this cool experiment.

This fun science fair project for 8th grade demonstrates what Kepler's 3rd law predicts about a planet's orbital period and its distance from the sun.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

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.

This science fair project outlines the uses of gold and explores the monetary value of gold.

This science fair project idea attempts to prevent another tragedy in Gonaives and encourages technological advances against flooding.

In this science fair experiment about recycling, demonstrate how the wax from a candle can be reused to make another candle.

This science fair project discovers the properties and uses of sand and develops new or improved methods, techniques, or products involving sand.

This science fair project idea increases the space efficiency of living areas and encourages economic improvements via new real estate ideas.

Polymers remove oil from contaminated waters. The purpose of this science project is to test the effectiveness of a polymer in cleaning up an oil spill.

The objective of this science project is to investigate why NASA has been using aerogel for the Stardust Project for collecting gas and dust from comets.

This science fair project idea determines the properties of rainwater and examines the techniques for harvesting rainwater.

This science fair project idea deals with the qualities of shade on a sunny day.

This science fair project idea attempts to develop a new or improved eco-friendly packing material.