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      a type of energy that can be heard  


Sound can travel through air, water and even metal.

Some NASA airplanes can fly faster than the speed of sound.


Related Links:
Make a Sound Cone
What is sound?


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Clouds of exhaust form around a rocket as it launches
A rocket launch creates lots of energy, which means the sound is very loud to our ears.
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Page Last Updated: October 9th, 2014
Page Editor: Sandra May