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

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

Explore the impact invasive species have on the environment with this research-based graphic organizer!

This is the story of our solar system. Learn about the life of Nicolaus Copurnicas and his great discovery. Learn more by answering the question at the bottom.

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

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

Learners will discover what heat waves are, and how they are connected to global warming, in this two-page earth sciences worksheet.

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

Almost nothing in this universe can travel faster than light! Have some fun exploring the speed of light with this space science worksheet.

Explore one of the great mysteries of the universe with this space science worksheet on black holes.

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

Use this lightning diagram to go along with what your child is learning about weather systems in school!

Get swept up in this comprehensive worksheet about the awesome power of dust storms.

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

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.

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

Did you know there are clouds in space? They are very different than the ones on Earth! Read a bit about nebula in this space science worksheet.

If your student is stuck on Celsius, hand him this multiplication and division practice sheet.

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

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

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

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.

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

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!