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This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

Make a backbone model to explore human anatomy and life science.

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

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

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

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.

Discover how and which salt melts ice the quickest.

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

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.

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.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

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

This classic children's game demonstrates how sound travels through air vs. through a solid.

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

Start your toy engines -- this is going to be a fast and friction-filled race!

Discover whether a metal will expand under hot water.

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

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

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

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

Using a toy race car kids create a visual model of the Doppler Effect.

This science fair project idea produces varying pitches of sound.

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.

This science fair project idea investigates the hardness property of minerals.