Here's a thorough, easy-to-understand breakdown of the color wheel that includes primary, secondary and tertiary colors.

Grab your trusty flashlight and get ready for a scientific treasure hunt!

Light travels so quickly that sometimes we can forget it even travels at all. Learn all about the direction light travels and perform your own experiment!

Can you explain why your blue shirt is blue? This worksheet is full of facts about light and how it reacts with objects to give us the perception of color.

Need a colorful way to impress your friends and family? This worksheet has got you covered!

Even colors have best friends. In the world of color, these best friend pairings are called complimentary colors.

Brush up on some physics vocabulary with this energy word search!

Looking for a worksheet to challenge your child's knowledge of science? This printable asks him to identify a solid, liquid and gas.

Right now the Earth is spinning, whether we can feel it or not. Do you know why? Uncover the science behind our spinning planet with this informative worksheet.

Does your little scientist know the different types of energy? Explore energy with this helpful info sheet!

Students flex their physical science knowledge by classifying items as solids or liquids in this fourth grade states of matter worksheet.

Teach your child the difference between potential and kinetic energy with this introductory worksheet.

Children will connect their understanding of gases to real-world items as they circle all of the pictures showing gases.

What is the water cycle? We're glad you asked! Learn about this amazing natural system that's been working for billions of years.

Get to know the Apollo 11 space mission in this science and history worksheet!

Kids practice identifying solids for a lesson on the states of matter in this 1st grade physical science worksheet.

Who knew that the machines of the world are all made of just 6 simple machines working together? Introduce your child to simple machines with this worksheet.

Students practice classifying items as liquids or solids for a lesson on the states of matter in this fourth grade physical science worksheet.

Kids practice identifying liquids for a lesson on the states of matter in this 1st grade physical science worksheet.

Looking for a quick reference about gravity and a definition for kids? This two page worksheet and activity has you covered!

Introduce children to physicist Albert Einstein — and a bit of theoretical physics — with this mini biography.

What is solar energy? Discover how we use the power of the sun, and complete this worksheet about an important renewable energy source.

Science can be a bit of a bore to some students, but with this quick worksheet on chemical and physical reactions, it can at least be a breeze.

Never heard of the planet Pirjute? That's because it's Jupiter, with mixed-up letters! Kids unscramble planet names on this third grade science worksheet.

Is your fourth grader learning about electricity? This worksheet is all about circuits, tests her skills and reinforces the concept of how a circuit works!

Budding scientists will learn about the density of salt water and perform an experiment with food coloring, salt water, and fresh water.

This worksheet teaches your student about physical change vs chemical change, matter, mass, and property. An exciting experiment reinforces the concepts.

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!