Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

Learn about the right-hand rule for magnetic force! Use a cathode ray tube in this physics experiment to see a magnetic field's effect on an electron beam.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

Science fair project that illustrates the properties of black holes in space.

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

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

This project examines how temperature affects the volume of gas in balloons.

This fun middle school science fair project idea helps student discover the concepts behind deep sea diving and how Cartesian divers work.

In this experiment, you will be making your own paper flashlight by conducting electricty with graphite.

Check out this fun science fair project idea for middle school students to learn about the effects of temperature on the density of a gas such as air.

This project examines whether corked bats truly make a ball travel farther than wooden bats that haven't been altered.

2011 VIRTUAL SCIENCE FAIR ENTRY: The objective of this science fair project is to develop a microcontroller and circuit that can conduct electricity.

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.

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

This project examines Newton's First and Second Laws of Motion with a bicycle and water balloons.

In this project, you'll create Oersted's experiment, which relates to how electric currents create magnetic fields.

This science fair project idea studies which brand of wintergreen candy produces the most sparks in the dark.

In this project students experiment with making music using only glasses of water.

This project will examine the relationship between materials and air resistance.

This science fair project idea explores which kinds of earplugs are the most effective.

This project uses toy cars to determine how friction and gravity affect cars and braking.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

In this Bernoulli's Principle experiment, you'll learn how an increase in the speed of a fluid, like air, decreases pressure.

Score a bull's eye with this cool science fair project on horizontal projectile motion. Guide a marble to its target and predict its trajectory using math!

Check out this cool science fair project idea to explore various aspects of projectile motions like mass, angle and distance.

This science fair project idea examines if there is a reason that musical notes are at the pitches they are.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

This experiment demonstrates the conservation and transfer of energy using a marble rolling over sandpaper.