Here's a great introduction to five famous astronomers for kids. See who got the star party started with this worksheet.

Right now the Earth is spinning, whether we can feel it or not. Do you know why? Uncover the science behind our spinning planet with this informative worksheet.

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

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

Learn about how the Earth was formed in this science worksheet that covers the early years of the Earth.

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

How do the Sun and the Moon interact with the Earth, and how do all three depend on one another? Find out in this science worksheet.

Help kids understand the size and scope of billions of years with this helpful reference worksheet.

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

Where is the Earth in space? Check out this worksheet that describes where weÃand some of our neighborsÃare in our galaxy.

Get to know some of the friendly, furry, feathery river wildlife that live near American rivers, then match each one to its home.

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.