Ch 11

• Water

  The medium through which sound is transmitted
• Vibrating tuning fork dipped in water


  Produces sound
• Vibrating objects can produce sound
• Sound can be produced by striking, plucking, scratching, rubbing, blowing or shaking different objects
• Vibration is a kind of rapid to and fro motion of an object
• The sound of the human voice is produced due to vibrations in the vocal cords
• The buzzing sound accompanying a bee is produced by the vibration of its wings
• A stretched rubber band produces sound when vibrated
• Medium


  The matter or substance through which sound is transmitted
• The disturbance created by a source of sound in the medium is called sound