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

Do you know how tornadoes form?This science worksheet diagrams what is known about what causes tornadoes to form.

This earth sciences worksheet offers a simple and informative overview to a fascinating geological phenomenon.

Get swept up in this comprehensive worksheet about the awesome power of dust storms.

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.

Where do flower babies come from? Find the answers in this word search about plant reproduction!

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

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

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!

Do you know how clouds form? Get the basic idea of how moisture in the air can become a cloud.

Use this lightning diagram to go along with what your child is learning about weather systems in school!

Did you know that each tree tells a story? In this worksheet, children peer inside a tree to learn about the layers in its trunk.

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

Our solar system has hundreds of moons! Read a bit about how a moon is formed with this lunar lesson.

Let your coloring skills blossom with this flower anatomy worksheet. Make your own flower, color and put your vocabulary skills to the test!

Learn more about the imposing tsunami with this worksheet about the science of tsunamis.

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

Almost nothing in this universe can travel faster than light! Have some fun exploring the speed of light with this space science worksheet.

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

If your student is stuck on Celsius, hand him this multiplication and division practice sheet.

That's not a lake... it's a crater! Get the scoop on some of the world's most well known craters with this space science worksheet.

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

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

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

How was our solar system created? Read a bit about one of the most well-known theories in this worksheet about the Big Bang.

Get to know your Jurassic from your Cretaceous in this handy geologic time periods chart.

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

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!