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.

Encourage your little environmentalist to learn about composting! Children will boost their reading skills as they learn what compost is and how it helps the environment.

What is a plateau? What's the difference between a butte and a mesa? Look at these three land forms and learn to tell them apart with this worksheet.

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

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

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

What is geothermal energy? Find out how we use parts of the Earth to provide us with renewable energy!

What is the rocky cycle? This info sheet answers that question with the help of a colorful diagram and a shout out to important vocabulary.

Is your child trying to answer the question what is weathering and erosion? This info sheet gives good definitions of the terms and some visual examples.

What is the Earth made of? Find out everything that goes on just below the surface in this science reading worksheet.

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

What does the Earth look like? Find out all about the nooks and crannies that cover the planet with this landforms worksheet.

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!

Children get to know a few geology terms in this landform word search puzzle.

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!

If you know what each planet looks like, you'll have no trouble with this intergalactic crossword puzzle.

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

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

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.

Test your child's science savvy with this worksheet, which asks your child to identify what items are made from plants.

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.