Ask & Experiment

Ask & Experiment has experiments for you to try at home, activity books to download, PhysicsQuest resources for your school or after school group, and a way you can get your physics questions answered by real physicists.


PhysicsQuest, a free competition for 6-9th grade students and after school groups, consisting of four science experiments that give students clues to solve a mystery. Classes can submit their answers online and be entered in a random drawing for prizes. PhysicsQuest kits are free to registered classrooms and groups. 

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Supernova Remnant thumb

Sound in Space?

Experiment with sound (or lack thereof) in a vacuum


Physics in the Tool Shed: Toolaballoonaphone

Take an exercise ball, some fish net and some old wrenches and presto! You’ve got a music machine.

Terminal Velocity and Orbits

I've read that orbiting objects like the space station stay in orbit because they are falling at the same rate the Earth is curving away underneath them.

What I don’t understand is their downward velocity should be increasing because it is caused by gravity / acceleration due to gravity. Shouldn’t it be “falling” with a greater velocity the longer it travels? Does it reach a terminal velocity like that of a skydiver? If so Why?

Find out the answer »

Activity Books


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