CLIP 1604

Understanding sound

Understanding sound
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Key Info

  • Title: Understanding sound
  • Duration: 00:25
  • Description: Sounds are produced by vibrations. You can feel these when you put your fingers against your throat. A violin bow causes a string to vibrate, lips vibrating cause the sound produced by brass instruments. By rubbing the handles of a bowl, it can be made to vibrate and when it does the water contained in it vibrates. Polystyrene balls on the surface of a drum illustrate how a small sound is caused by a small vibration. The size of a vibration is called the amplitude. The bigger the amplitude is the louder the sound.
  • Subject: Science   Topic: Sound
  • Keywords: sound, vibrations, amplitude, quiet, loud, violin, strings, brass, instruments, water

Ideas for use in class

  • This clip could be used in Science or Music lessons to allow students to see that sounds are produced by vibrations.

Background details

  • Clip language : English
  • Aspect ratio : 16x9

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