After he fills in the blanks, your student can hold on to this worksheet on hydrogen for reference when preparing for tests and quizzes on physical science.

Where'd that shadow come from? Next time a scary shadow crosses your path, you'll know just what to look for.

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

Right now the Earth is spinning, whether we can feel it or not. Do you know why? Uncover the science behind our spinning planet with this informative worksheet.

Teach your little scientist the difference between physical and chemical changes, on a molecular level.

Introduce children to physicist Albert Einstein — and a bit of theoretical physics — with this mini biography.

Ever wonder about how to make the perfect paper airplane? Learn about the four forces that affect flight with paper airplane physics!

Learn all about light refraction by simply placing your pencil in a glass of water. Warning: your pencil may not be quiet the same afterward.

Discover some of the fascinating properties of gravity by studying one of Newton's famous laws, the Law of Gravitation.

Can you explain why your blue shirt is blue? This worksheet is full of facts about light and how it reacts with objects to give us the perception of color.

Introduce your flashlight to mirrors. Mirrors are cool surfaces that reflect light just as well as they reflect your face.

Use this worksheet to help teach your preschooler what everyday things use electricity to function.

Learn about drag, air resistance, and Newton's laws with this cool worksheet on bobsled physics!