Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

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

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

Find out whether optical mice are useful on all surfaces or if there are drawbacks to this supposedly superior solution to the traditional roller-ball mouse.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

Discover how and which salt melts ice the quickest.

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

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

Construct and experiment with a periscope using reflected light rays to gather an image.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

This science fair project idea explores alcoholic fermentation at work by making your own soda.

Discover whether a metal will expand under hot water.

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

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

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

This science fair project idea produces varying pitches of sound.

This project explores ways to prevent static electrical shocks.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

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

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.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

In this science fair project, students make their own rain gauge to measure rainfall.