BBC Learning Zone Clips

CLIP 8

Frequency and vibration of sound

Frequency and vibration of sound
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Key Info
  • Frequency and vibration of sound
  • Duration: 00:52
  • The presenter discovers that objects vibrate at a particular frequency. For example, a wine glass vibrates at 400 Hertz or 400 times per second when struck. This principle is used to topple a tower of wooden blocks on a glass plate when the plate is made to vibrate violently by a 200 Hertz sound source.
  • Subject:

    Science

       Topic:

    Phys: Waves - Sound and Light

  • Keywords: sound, energy, frequency, vibrate, hertz
Ideas for use in class
  • Demonstration of key concepts.
Background details
  • Clip language : English
  • Aspect ratio : 4x3

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