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In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Investigate which substances are most effective at removing salt from water.

This science fair project collects information on the Internet about yourself and others.

Discover how and which salt melts ice the quickest.

The purpose of this science project is to investigate which will grow larger plants: compost, soil and Miracle - Gro, a mixture of both.

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

This science project allows students to study the psychology of happiness.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

Explore which teeth-whitening products work best - Whitestrips or Whitetrays.

Learn about the greenhouse effect- and get great science fair experiment ideas. Read more.

This project compares different liquids and the freezing, melting and boiling points of liquids.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

Study the effects of wind and temperature on evaporation. Place wet sponges in different environments, check at regular intervals, track time required to dry.

Discover which fabrics shrink the most in the wash and why.

In this science fair project, students will learn how to calculate the formula for the thermal decomposition of potassium chlorate.

In this activity, your child will be challenged to build a tall tower out of building bricks! The instructions include questions prompts to guide students through the design challenge.

The objective of this science fair project is to determine whether there are gender differences when boys and girls view optical illusions.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

It's the day before the test, and you still have a ton to memorize! Sound familiar? Test memorizing techniques to help yourself out next time.

In this science fair project, students evaluate if the phases of the moon affect the way people feel.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Science fair project that determines whether disinfectant sprays or disinfectant soaps are more effective at removing bacteria from hands.

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

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

Research optical illusions and human auras. Understand why the probable cause of perception is mach bands.

The purpose of this science project is to determine which chemical best lowers the temperature of water in a cold pack and if the amount affects its use.

The purpose of this science fair experiment is to investigate whether the color of your hair affects how much static electricity is carried.

Study the physical and chemical changes that make hair curl or straighten. Study ingredients, function of chemicals like thioglycolic acid.