Practice geology vocabulary with this challenging crossword puzzle.

Teach your child how to respect the ecosystem with a science worksheet that doubles as a coloring page. Can they identify the sources of pollution in the scene?

There are lots of stories around the world for the rabbit moon: a rabbit image seen in the shadows on the moon's face. Here's one for young moon-gazers!

This worksheet is a quick-reference tool of space vocabulary for kids, with an exercise to use the words properly in provided sentences.

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

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

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.

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

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

Learn about the science behind one of nature's most awesome spectacles: monsoons.

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

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.

Learn Saturn facts with this science printable, like that it is one of the large gas planets in our solar system!

One of the most famous and easy to spot constellations is the Big Dipper! Formally known as Ursa Major, this constellation was named after a bear.

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

Don't let your kid bark up the wrong tree! Engage him in a word search filled with tree terms, boosting his attention to detail and problem solving skills.

It's easy being green when you have our Earth Day game for a guide. Just print out this Earth Day game and get ready to score one for the planet.

This Earth Day quiz family and friends with this true or false questionnaire. It's all in good, informative, fun!

Here's an introduction to different types of rocks.

Learn all about rivers--how they were formed, what they're made of, and what they do for us and the planet--in this reading and science worksheet.

Looking for a fourth grade worksheet to help your kid with astronomy? This printable will help him learn the relative sizes of planets.

What is biomass energy? Learn about an important form of renewable energy with this colorful worksheet.

This printable features the planet closest to the sun. Learn Mercury facts and further your knowledge of outer space by discovering new things.

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

Use this cool 2-page worksheet to make your own big dipper clock!

Does your child have a knack for astronomy? Teach him about the constellations with this great worksheet.

Many legends told by ancient people have characters that you can find as star formations called constellations! This one is Andromeda.