Young physicists learn about apparent weightlessnessâthat weird sensation you sometimes feel in elevators, turbulent airplanes, and roller coasters.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Students will investigate the illumination durations and intensities of different luminous substances of different colors of the spectrum.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

What's the difference between centripetal and centrifugal force? Students find out by seeing both in action as they conduct this experiment.

This project examines various algorithms to determine the ideal algorithm for a strategy game.

Determine whether the application of Febreeze will lower the bacterial count.

This project is about after-images and what possibly affects them.

Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

In this fun science experiment, make a balloon car and test it on different surfaces to learn about sliding friction and rolling friction.

Science fair project that determines what neurons are, what they do and compiles this vital information in an illustrated book.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

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.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

This science fair project idea focuses on the production of oxygen by plants during the photosynthesis process.

The objective of this science fair project is to determine the rate at which participants can respond to different patterns.