Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

The objective of this science fair project is to determine whether drawing with the right side or the left side of your brain will produce a better picture.

This science fair project idea explores whether dogs do look like their owners.

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.

Glass is see-through, but usually you can still see that it is there. In this experiment, we use baby oil to make glass go completely invisible.

Is there really such a thing as healthy gum? Students will learn what factors in chewing gum contribute to healthy teeth in this exciting science fair project.

Free science fair project idea that examines the ergonomics of your environment. Redesign your living space to be better suited to your lifestyle.

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

This science fair project idea focuses on saturated and unsaturated lipids (fats and oils).

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

This science fair project evaluates which sense produces the fastest response time: hearing, touching, smelling or seeing.

In this science fair experiment, middle school students evaluate whether tone of voice can influence our ability to remember a list of everyday objects.

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 in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

This science fair project idea models industrial oil spills and determines if they have an impact on wildlife living beneath the surface of the water.

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

This experiment investigates whether there are certain sounds that affect men and women differently

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

This science fair project idea determines if material and tensile strength of different types of skateboard wheels affects the velocity of the skateboarder.

Explore properties of liquids and how temperature and salinity effect surface tension of liquids in this fun- filled science fair project idea.

The purpose of this science fair project is to build a basic radio.

This science project is to discover which Black Walnut tree tissue contains the most concentrated amount of Juglone, a substance that works like an herbicide.

Science fair project that tests the correlation between outdoor temperature or weather conditions and the number of visible stars at night.

Determine the differences between various bicep exercises, both in terms of how much muscle exertion they create and how they affect your heart rate.

How does light affect plant growth? Do different colors of light work better than others? Find out in this classic science fair project idea.

Does fear cause the same physiologic responses in men and women? This experiment measures people's blood pressure and heart rate while watching a scary movie.