2nd - 7th Grade Physical Science Resources : Page 4

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

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

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

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

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

Set your young chemist up for an afternoon of science-fueled magic with a deceptively simple activity starring baking soda and vinegar!

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

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.

How powerful is the reaction between baking soda and vinegar? Find out here!

This science fair project idea produces varying pitches of sound.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Try the classic balloon-on-the-wall trick with your kid and watch static electricity in action.

Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.