• sound wave form 2
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  • 1. Sound is produced when objects: A. Vibrate B. Stop moving
    A. Vibrate
  • 2. Sound waves travel fastest in: A. Solids B. Gases
    A. Solids
  • 3. The unit for frequency is: A. Hertz (Hz) B. Newton (N)
    A. Hertz (Hz)
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