BBC Learning Zone Clips

CLIP 13185

Bernoulli's Principle

Bernoulli's Principle
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Key Info
  • Bernoulli's Principle
  • Duration: 02:33
  • Dr Yan from the BBC One series 'Bang Goes The Theory' challenges members of the public to blow a plastic ball out of a tube and then a funnel. Surprisingly they are unable to blow a ball out of the funnel. He then explains the link to Bernoulli's Principle. A higher air speed surrounding the ball means a lower pressure below it. He then shows that this can be used to counter the effects of gravity by turning the funnel upside down and keeping the ball in it (until he runs out of breath!). First broadcast on BBC One on 'Bang Goes the Theory' in September 2010.
  • Subject:

    Science

       Topic:

    Phys: Forces - Motion

  • Keywords: Bernoulli's Principle, gravity, air speed, pressure, Dr Yan, Banggoesthetheory
Ideas for use in class
  • Could be used to show Bernoulli's Principle in a practical way. Students could easily recreate the experiment using plastic tubes and ping pong balls. Can they explain the science behind it though? This clip accompanies a BBC Teachers' Pack to support Series 3 and 4 of 'Bang Goes The Theory'. The pack can be downloaded from bbc.co.uk/schools/teachers/bang/
Background details
  • Clip language : English
  • Aspect ratio : 16x9

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