Here's a fun way for kids to review their knowledge of earth science terms. Challenge your child to give a definition of each word as he finds it.

Find a definition of what "natural resources" are, and complete the natural resources word search. It's a good vocabulary warm-up!

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!

Through a simple matching activity, kids learn how their actions can have a direct effect on the environment.

Space enthusiasts will love learning about Freedom 7, the first manned American space mission.

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

How much do you know about our home planet? Boost your Earth knowledge with this science printable.

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

Do you know why Mars is called the Red Planet? Find out that and more on this planet printable.

Kids will learn about fossils in this worksheet. Help your child learn about the scientific method by getting him to examine a fossilized dinosaur skeleton.

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.

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.

Without rain, we wouldn't have any puddles to splash and stomp in. Does your third grader know why and how rain falls from the clouds?

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.

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.

Worm your way through this soil maze, which doubles as a fun way to review the names of the different soil layers.

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.

Discover some fun facts about the sun — and bring it to life with color — with this astronomy worksheet!

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.

This reading comprehension worksheet focuses on Brazil's incredible natural resources, targeting both Earth science and language arts.

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?

Use this fossils worksheet to help a child learn about life on earth. Your child will learn about evolution and extinction, and also form a hypothesis.