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

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

Did you know the surface of the Earth is always changing? Learn about the events that change Earth's surface with this crossword puzzle for second and third graders!

Discover Earth’s different spheres with this fourth- and fifth-grade earth science activity!

Uncover secrets of the past with this third-grade worksheet about fossils!

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

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

Discover the impact of water on Earth’s landscape with this fourth-grade erosion worksheet!

Review the rock cycle with this second-, third-, and fourth-grade crossword puzzle!

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.

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