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Sound--what is an echo?
videorecording
Sound--what is an echo?
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1 Total copies, 1 Copies are in, 0 Copies are out.
Sounds form when objects vibrate, and different speeds of vibration produce different sounds. Examines the ways sound is made, what determines loudness, and how sound travels.
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Subjects
Sound.
Echo.
Language
English
Series
Science for you series The Magic Lantern video collection