Together, water and photosynthesis are the source of all life on Earth! Little curious minds will enjoy discovering the ins and outs of photosynthesis.

In this worksheet, kids learn about friction by answering questions about the amount of friction in different situations.

Are students studying electricity? Give them a break from the scientific nitty-gritty with this fun word search full of electricity terms!

What is geothermal energy? Find out how we use parts of the Earth to provide us with renewable energy!

Every four years something funny happens with our calendars -- we add a day! Why do we do this? Discover the science behind leap year.

Have you ever wondered why water in a drinking glass looks clear while water in the ocean looks blue? Find out why with this fun worksheet!

Have you ever wondered what keeps the moon in orbit? Newton's first law gets a quick introduction, too, in this worksheet for kids. Check it out!

Children learn the fascinating physics behind lightning, along with a few fun facts, in this physical science worksheet.

This science vocabulary activity is packed with basic science vocabulary words to help the youngest kids warm up to scientific concepts.

Give your budding chemist the facts and practice she needs for measuring with graduated cylinders.

This worksheet teaches all about the planet Saturn and its placement in the Solar System.

Kids draw examples of solids, liquids, and gases in this 1st grade physical science worksheet that focuses on the states of matter.

Your child will learn how electricity is made and used by drawing pictures of household products that use electricity to create light, heat, and motion.

This worksheet teaches your child about physical properties of water, specific heat, kinetic energy and more.

When we push or pull an object, we exert force on it. Get your child thinking about force by challenging him to describe how each person is exerting force.

Fly high with The Wright Brothers, two siblings who soared to the forefront of history with their design for the first modern airplane.

Budding inventors can get a fun review of the simple machines with this word search.

Pull the lever on learning! Get to know one of the six simple machines with this worksheet about the lever.

Does your child know where Earth is in the Solar System? He'll learn as he completes this fun, planet printable.

Can your child tell what will be attracted by a magnet? Challenge him to think about why magnets attract certain objects.

Rainbows look like swipes of brightly colored paint hanging in the sky. Have you ever wondered how they got there?

A lot of common objects use electromagnets to work. This word search will get your child thinking about all the electrical and mechanical devices around her!

A handy worksheet that breaks down the properties of metal. A good physical science review sheet to keep around for reference.

I spy with my little eye... six simple machines! Here's a fun way to help your child review the simple machines.

Did you know that the screw is actually one of the six simple machines? This handy machine helps to make work easier!

Learn some basic chemistry with this worksheet about the universal solvent: water. Find out why water is called the universal solvent.

Did you know that an elevator is actually one of the six simple machines? Help your child understand how the pulley works.

Budding scientists can learn about an important physical science concept with this worksheet all about density!

What is energy? Energy is the ability to do work! Use this colorful worksheet to teach your little scientist the basics of energy.

Find out how colors work with an intro to the color spectrum. Kids will investigate the seven colors of the rainbow and do a color wheel experiment.