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?

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

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

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

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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

Here's a fun and simple activity to introduce your child to surface tension, and pull an awesome stunt in the process!

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

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.

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

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

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

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

What's the quickest way to separate salt and pepper? Let static electricity do the work! Your child will be fascinated by this simple experiment.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

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.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

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

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

Introduce your child to the amazing, almost magical phenomenon of static electricity!