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

How did salt ever get into the ocean? Find out how, and then try conducting your own salt water experiment.

Budding scientists will learn about the density of salt water and perform an experiment with food coloring, salt water, and fresh water.

How cool are chromosomes? Read what Steve the savvy scientist has to say about chromosomes and genes before testing your knowledge with some fill-in-the-blanks.

Practice geology vocabulary with this challenging crossword puzzle.

Energy is a crucial part of physical science! All things on Earth have energy, whether it's potential or kinetic.

Hypothesis, observation, data...with so many terms, learning the scientific method can be tricky. Learn the steps by helping Dr. McSquare sort out his reports.

Use clues to fill in the boxes in this crossword puzzle, and learn more about freshwater fish along the way.

What a wonderful world word search! See if you can find all 10 of the Earth-related terms in the word search.

Does your little scientist know the water cycle? Challenge her with this cut and paste activity where she'll label each part of this water cycle!

Let your little weather observer discover the four seasons! She'll match up each season with its proper picture to show her knowledge of how weather changes.

Can your little geologist identify the three main types of rock? Test his earth science savvy with a matching activity.

This Awesome Anatomy coloring page is all about the human eye, and makes a handy study tool as well!

Learn all about hurricanes in this earth science Q&A.

This Earth maze features a cool globe design. Perfect as an Earth Day activity, our Earth maze gets your child to consider our home planet.