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.

It's easy being green when you have our Earth Day game for a guide. Just print out this Earth Day game and get ready to score one for the planet.

This Earth Day quiz family and friends with this true or false questionnaire. It's all in good, informative, fun!

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

A fun challenge for kids, this Earth Day crossword puzzle is a great way to review facts about the Earth and get a reminder on how to live green.

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

What's the difference between renewable and non-renewable energy? Help your student discover the various forms of energy we use each day.

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

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!

On this worksheet, kids learn all about the look and location of Uranus, and they get to cut out a picture to use in their own Solar System diagram.

Discover how water flows in this informative environmental science worksheet!