Learn more about molecules and how they comprise the air all around us in this intro-to-earth-science worksheet.

Learn the science of volcanic eruption with this cutaway diagram

If you think volcanoes are cool, this worksheet will blow your mind! Learn about the rock cycle by reading the paragraph and taking a multiple choice quiz.

The infamous Halley's Comet only comes around once every 75 years or so! Read some interesting info on the world's most famous comet.

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!

Learn all about hurricanes in this earth science Q&A.

Learn all about wildfires, a natural phenomenon looked upon with awe and caution.

Did you know that there are forests in the temperate ocean ecosystem? Learn all about the temperate ocean with this fun ecosystems sheet!

Almost half of all known fish species call ponds, lakes, rivers, and other freshwater habitats home. Learn about freshwater fish in this worksheet.

Peel back the layers of the earth in this earth science worksheet. Can you name all of them?

You can find rocks almost anywhere, but there's a lot more to rocks than meets the eye. Check out this science worksheet to learn all about rock formations.

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.

The water cycle plays a big role in weather patterns. Color this water cycle chart and get familiar with this cycle at work.

Where to flower babies come from? Use this word search to learn about the different pollinators in our environment, and how they help spread plant seeds.

Explore one of the great mysteries of the universe with this space science worksheet on black holes.

Discover the phases of the moon with this third- and fourth-grade space science worksheet!

Discover how water flows in this informative environmental science worksheet!

What happens to water after it rains? Learn about the stages of the water cycle in this colorful worksheet!

Searching for a worksheet to help your fourth grader with science? This printable will help him practice astronomy vocabulary.

What is Pluto? According to scientists... no, not quite. Find out more behind the answer to that age-old question.

If Dorothy had lived a little further south, she might have been swept away to Oz by a hurricane.

How do you think our universe will end? With this worksheet, explore some of the common theories, and then come up with some of your own!

This word search introduces your child to important rocks and minerals vocabulary, as it strengthens his attention to detail.

Get to know Earth's star with with this diagram and vocabulary worksheet!

Earth has many different land and water features—can you recognize them? Test your knowledge with this crossword puzzle for third and fourth graders!

Discover examples of weathering, erosion, and deposition with this fourth-grade worksheet!

Learn about some of the major U.S. watersheds in this fascinating science and geography worksheet!