What is the Earth? Here is a reading passage and a word search to help your kid get acquainted with Earth science.

Have you ever looked into the night sky and wondered where all those millions and million of stars come from? Find out here with a mini astronomy lesson!

Did you know that ocean water is salty, but river water is not? Find out how fresh and salt water mix together in this water cycle worksheet.

Did you know that Uranus can get as cold as -144° Fahrenheit? Learn more about the third largest planet in our solar system on this planet printable.

Learn about how the Earth was formed in this science worksheet that covers the early years of the Earth.

This worksheet features Mercury, the smallest planet in our Solar System, and also the planet that's closest to the Sun.

This worksheet features a scientific explanation and awesome photos of solar eclipses, which are extremely rare scientific phenomena.

How well does your child know the layout of our Solar System? This worksheet focuses on the biggest planet, Jupiter.

How much do you know about our solar system's planets? Kids learn facts about Neptune in an out-of-this-world worksheet.

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

Milky Way: candy bar or galaxy of 100 to 400 billion stars?

Renewable energy is extremely important for the Earth's future! Test your child's knowledge of renewable resources with this review sheet.

Discover some fun facts about the sun — and bring it to life with color — with this astronomy worksheet!

How far away is the Red Planet from the sun? Find out with this great Solar System printable.

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

Here's a great way to teach your kids more about our solar system. This worksheet focuses on the dwarf planet, Pluto.

What is water energy? Also known as hydro power, water energy is one of our important renewable resources!

Does your learner ever wonder what makes the Earth dark at night and bright during the day?

How do the Sun and the Moon interact with the Earth, and how do all three depend on one another? Find out in this science worksheet.

This helpful worksheet lays out all the qualifications for planethood. A great way to start studying outer space science!

Without rain, we wouldn't have any puddles to splash and stomp in. Does your third grader know why and how rain falls from the clouds?

Mix a little art into your science with this reading-slash-drawing sheet on hills and valleys.

From glaciers to mountains to wetlands, our planet has lots of different landforms. Help your child learn all about them with this fun earth science crossword.

Ready for liftoff? Take to the starry skies with this worksheet that explores the three basic types of galaxies.

Teach your child about the layout of the Solar System with this simple worksheet, featuring the planet Neptune.

Give your kid help with his science skills with this worksheet, which practices natural disaster vocabulary.

Where is the Earth in space? Check out this worksheet that describes where weÃand some of our neighborsÃare in our galaxy.

Cave formations come in all kinds of shapes and sizes; get the scoop on common cave formations with this two page printout with a maze and vocabulary.

On this worksheet, kids learn all about the look and location of Uranus, and they get to cut out a picture to use in their own Solar System diagram.

Ever lay on your back to watch the clouds? With this cloud chart you and your little scientist can identify the different types of cloud formations.