This science fair project idea investigates the hardness property of minerals.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

In this science fair project, students use the streak test to tell minerals apart from each other.

Discover whether cold or hot water from the faucet will boil faster on the stove.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

In this project, sunlight is blocked from a leaf in order to see the affect that sunlight has on leaves.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

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

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

This project investigates the affect of storage temperature on microwave popcorn.

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

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.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

In this project, the affect of acid rain is simulated by the acid, vinegar.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Test whether plants can grow without sunlight and water.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

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!