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  • Created by: ocean
  • Created on: 30-11-12 11:34
  • Sound waves are longitudinal waves that must pass through a medium.
  • Echoes are reflections of sounds.
  • Light and other forms of electromagnetic radiation travel as transverse waves. These waves can travel through a vacuum, and they all travel at the same speed in a vacuum.

Sound waves are longitudinal waves. Their vibrations occur in the same direction as the direction of travel. Sound waves can…


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