Episode 7: Space Soundwaves

Science off the Sphere

Astronaut and chemist Dr. Don Pettit does physics demos that are out of this world. Currently on board the International Space Station, Dr. Pettit presents fantastic physics that can only be demonstrated in micro-gravity.


Episode 7: Space Soundwaves

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Challenge Question: Why does Don use low frequencies to get the water to jiggle?

Challenge Answer: We think it is because the lower frequency vibrations allow for the formation of standing waves. Standing waves are made when two waves traveling in opposite directions intercept allow them to have constructive and destructive interference. This is more likely to happen at lower frequencies.

Challenge Winner: Neighborhood After School Science Association, Ava, NY