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

Invite your child to dream big and design their very own planet. Encourage both creativity and scientific speculation with this fun worksheet.

Do you know how clouds form? Get the basic idea of how moisture in the air can become a cloud.

This earth sciences worksheet offers a simple and informative overview to a fascinating geological phenomenon.

Give your kid help with his science skills with this worksheet, which practices natural disaster vocabulary.

Do you know how Tsunamis are formed? This worksheet shows the physics behind tsunami formation.

Do you know how tornadoes form?This science worksheet diagrams what is known about what causes tornadoes to form.

Learn more about the imposing tsunami with this worksheet about the science of tsunamis.

Learn all about wildfires, a natural phenomenon looked upon with awe and caution.

Did you know that there are forests in the temperate ocean ecosystem? Learn all about the temperate ocean with this fun ecosystems sheet!

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

Our solar system has hundreds of moons! Read a bit about how a moon is formed with this lunar lesson.

Learn what distinguishes a meteoroid, meteor and meteorite with this outer space science sheet!

A fill-in-the-blank exercise on tornadoes, made for fifth grade science students.

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

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.

Practice geology vocabulary with this challenging crossword puzzle.

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

Almost half of all known fish species call ponds, lakes, rivers, and other freshwater habitats home. Learn about freshwater fish in this worksheet.

Let your coloring skills blossom with this flower anatomy worksheet. Make your own flower, color and put your vocabulary skills to the test!

Here's a stormy science adventure that will blow your socks off! Learn about tracking hurricanes with this map of coordinates.

How was our solar system created? Read a bit about one of the most well-known theories in this worksheet about the Big Bang.

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.

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.

Get to know your Jurassic from your Cretaceous in this handy geologic time periods chart.

Learn more about molecules and how they comprise the air all around us in this intro-to-earth-science worksheet.

There are lots of stories around the world for the rabbit moon: a rabbit image seen in the shadows on the moon's face. Here's one for young moon-gazers!

Learn a little about our planet with an Earth coloring sheet and find out more about our travels in to space by aswering the question at the bottom of the page!

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