Why do some objects make loud sounds when dropped, while others make quiet sounds?

Fly high with The Wright Brothers, two siblings who soared to the forefront of history with their design for the first modern airplane.

Children put their science vocabulary to the test with this engaging crossword puzzle!

Test your knowledge of the periodic table of the elements with this quiz page!

Test your students' knowledge and memory of periodic table elements with this crossword puzzle.

Test your knowledge of electrical energy with this third- and fourth-grade worksheet!

Put your prediction proficiency to the test in this third-grade physical science worksheet!

Don't let school year learning slip away this summer: use this chemistry worksheet to practice identifying elements.

Renewable energy is extremely important for the Earth's future! Test your child's knowledge of renewable resources with this review sheet.

It's a bird! It's a plane! It's Physics Man! Test your knowledge of the physical world with this fun questionnaire that takes physics to a super-heroic level.

After your child fills in this review sheet on chemical and physical properties, it's a good idea to hold onto it for future test review!

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.

Is your fourth grader learning about electricity? This worksheet is all about circuits, tests her skills and reinforces the concept of how a circuit works!

Create your own gravity-powered roller coaster in this creative worksheet!

A handy worksheet that breaks down the properties of metal. A good physical science review sheet to keep around for reference.

It's a paper parachute brigade! Learn how to build your own parachute, and learn how the parachute was invented over 500 years ago.

During the Gold Rush, people weren't sure if they found gold or something else, and these easy steps would help them be sure.

Learn how conductors and insulators affect the flow of electricity in this helpful fourth- and fifth-grade worksheet!

Children will connect their understanding of gases to real-world items as they circle all of the pictures showing gases.