This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

This science fair project idea's objective is to understand the concept of air pollution and examine the quality of air in our environments.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

In this science fair project, kids will be able to see where germs reside on their hands while gaining insight into the benefits of thorough hand washing.

Look for correlation between pH values of commercial soaps and detergents and manufacturer claims about eye irritation hazards.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Study emulsifiers and learn how they are used in food science, medicine, soaps and cosmetics. Identify which materials are created using an emulsifier.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

This science fair project idea's objective is to become familiar with items your family regularly throws in the trash.

Design a hearing protection device to protect their ears from loud noises. Examine the properties of current protective hearing devices, materials.

Research hemispheric brain dominance in order to determine if you have a dominant side. Test foot, ear dominance. Record observations.

Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

The project determines determine if a sports drink affects the heart rate of a student athlete during exercise.

Research long-term effects and draft a questionnaire about frequency of marijuana use and average annual income. Interpret findings in a detailed report

This high school science fair project investigates if small changes in your diet alter the pH of your saliva.

Identify vitamin C in fruit juices and to determine which of the following juices contain the most vitamin C

This experiment investigates if small changes in your diet can alter your basal body temperature.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

This science fair project idea determines whether volunteers remember more information presented orally or visually or kinesthetically.

Test for a correlation between perceived color and heart rate. Using a stethoscope and stop watch, measure the heart rate (beats per minute) of volunteers.

In this science fair project, students create their own miniature salt flats at home.

This experiment evaluates whether a personâs dominant hand is more sensitive than their non-dominant hand.

This experiment evaluates how a diet that is rich in "mood-enhancing" foods affects the way people feel over several weeks.

How much gas is released into your stomach by your favorite beverages? This project examines which beverages produce the most gas.