The infamous Halley's Comet only comes around once every 75 years or so! Read some interesting info on the world's most famous comet.

What is water energy? Also known as hydro power, water energy is one of our important renewable resources!

Don't let your kid bark up the wrong tree! Engage him in a word search filled with tree terms, boosting his attention to detail and problem solving skills.

Seasonal weather postcards get kids to learn some vocabulary and identify the seasons. Learn about spring, summer, fall, and winter with weather postcards.

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.

Challenge your science student to record a shadow over the course of a day and make the connection between shadows and the time of day.

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.

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.

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

Here's an introduction to different types of rocks.

Would you put your swimsuit on when it's snowing outside? Let your child decide with this simple categorization worksheet

Circle and color all the pieces that Jenny might need for a day of sun and sand.

Studying earth science? Learn about the different types of clouds with the series of cloud types.

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.

Looking for a fourth grade worksheet to help your kid with astronomy? This printable will help him learn the relative sizes of planets.

Wind has its own unique properties that help shape the weather. Give your little scientist a heads up with these wind facts!

What is biomass energy? Learn about an important form of renewable energy with this colorful worksheet.

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

What is Pluto? According to scientists... no, not quite. Find out more behind the answer to that age-old question.

This printable features the planet closest to the sun. Learn Mercury facts and further your knowledge of outer space by discovering new things.

This worksheet features a scientific explanation and awesome photos of solar eclipses, which are extremely rare scientific phenomena.

Learn your clouds with this coloring series of cloud types that merges science with coloring fun.

Use this cool 2-page worksheet to make your own big dipper clock!

Does your child have a knack for astronomy? Teach him about the constellations with this great worksheet.

Many legends told by ancient people have characters that you can find as star formations called constellations! This one is Andromeda.

Help your second grader understand the different types of weathering and how they can affect the earth.

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

Dig up some earth science learning with this printable, and turn your next hike or beach excursion into a lesson in soil science!

Blast off into space with a fun planet printable. This one features Jupiter, the largest planet in our solar system.

Ocean resources are an incredible part of how we live our lives; read and write about them with this worksheet.