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20 October 2014
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Lesson Plan 12: Sound and resonant frequencies

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Sound and resonant frequencies (Page 72 of the Teacher's Pack)

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Sound and resonant frequencies (642 KB)

Suitable for: 11-16 years

Curriculum and learning links:

  • Sound and hearing, resonance

Learning objectives:

  • State that sound travels in longitudinal waves created by a vibrating object
  • Use wave diagrams to describe the difference between waves with varying amplitude and frequency
  • Explain why an object will resonate when driven at its natural frequency

Clip 12.1: Musical road - Jem describes the link between vinyl records, frequency and cattle grids on roads, and outlines a project in which he hopes to use a car to generate a tune by driving over a homemade ladder.

Clip 12.2: Road test - Jem and Dallas test the track with a three-wheeled car.

Clip 12.3: Shattering sounds - Dr Yan breaks a wine glass using a note played on a violin.

Clip 12.4: Sound science - Dr Yan explains why different objects have different natural frequencies and succeeds in breaking a flat pane of glass with a note played on a double bass.



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