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

Learn a bit about meteors, asteroids and comets as they travel across the night sky. Can your child round out the page by adding color to these orbiting rocks?

This Earth Day, learn about conservation and the environment while you enjoy solving a fun puzzle! 

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

Launch into learning with this worksheet on Gemini 4, one of the original missions in the early days of the U.S.'s space program.

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.

Where to flower babies come from? Use this word search to learn about the different pollinators in our environment, and how they help spread plant seeds.

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

Searching for a worksheet that will help your child practice their reading skills? This printable uses life science as a background to help young readers.

This worksheet is all about the U.S. space mission of Friendship 7, and will help kids with reading comprehension and U.S. history knowledge all at once.

This worksheet will quiz your child on the different fields of study in science. What's the difference between a zoologist and a geologist? Find out here!

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.

What happens to water as it travels through mushy, smushy wetlands and swamps? Find out all about the water cycle and fill in scientific terms in the swamp.

That's not a lake... it's a crater! Get the scoop on some of the world's most well known craters with this space science worksheet.

How do you think our universe will end? With this worksheet, explore some of the common theories, and then come up with some of your own!

Learn about the "dwarf planet" in our solar neighborhood. There are more Pluto facts to learn, if you figure out the answer to the question on the page.

This reading comprehension worksheet focuses on Brazil's incredible natural resources, targeting both Earth science and language arts.

Get to know each of the Seven Summits, then organize their heights into a graph.

Nature is all around us! But how much does your child know about our natural world? Test her knowledge with some nature fun-facts trivia.

Help your budding geologist learn about these common landforms in this worksheet on peninsulas and capes.

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

Searching for a worksheet to help your fourth grader with science? This printable will help him with geology.

Quite possibly the most famous constellation, the Big Dipper is a small part of Ursa Major, the big bear constellation.

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.