Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

What happens when colored beams of light mix? You might be surprised.

Conduct a simple science experiment to see if flowers from your garden pass the acid-base indicator test with this exciting chemistry activity.

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

This science fair project idea experiments with spinning color wheels and optical illusions.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Learn how to make marbleized paper with simple everyday ingredients in this fun activity! Your child will learn about oil and water while doing this project.

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

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

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.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

This science fair project idea produces sounds by creating vibrations using different objects.

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

By using static electricity generated from their body, a child can cause a small fluorescent lamp bulb to light up!

Teach your child how butter is created by shaking up cream the old-fashioned way.

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

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

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

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

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!