These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

Cleaning can be a chore, but not with this sudsy experiment!

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

How powerful is the reaction between baking soda and vinegar? Find out here!

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

This science fair project idea investigates how the shape of an object affects drag.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

This science fair project idea explores the egg's thin membrane.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

This science fair project idea determines which method of hand cleansing is the most effective.

Test your friends to find out if you can replicate the placebo effect's incredible results.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

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

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

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.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

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

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.