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

Discover how water flows in this informative environmental science worksheet!

Did you know there are clouds in space? They are very different than the ones on Earth! Read a bit about nebula in this space science worksheet.

Discover how cover crops enrich soil and support healthy crop growth with this research-based worksheet for fourth and fifth graders!

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

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

Learn what distinguishes a meteoroid, meteor and meteorite with this outer space science sheet!

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

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

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

What is the difference between a solar eclipse and a lunar eclipse? Find out with this stellar space science worksheet!

Learners will discover what heat waves are, and how they are connected to global warming, in this two-page earth sciences worksheet.

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

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

Children get an introduction to plate tectonics in this geology worksheet.

Discover the difference between comets and asteroids in this stellar earth and space science worksheet!

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

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

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

Water covers 70% of Earth’s surface—but where exactly is it? Find out in this fifth-grade worksheet!

Kids learn about the Earth's solid and atmospheric layers, then label the diagram with the correct terms in this fifth grade Earth science worksheet.