Tuesday, October 20, 2009

Sound Waves


Sound Waves:
  • sound needs a medium to travel through
  • the sound wave is a compressional wave
  • the particles of the wave are compressed, then released, thing of a Slinky





Bats use ultrasound (above human hearing) to locate food sources- bugs. This process is known as echolocation.












Sonar- the process of reflecting sound waves underwater to locate objects.

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