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Building a toffee-powered rocket sled

Building a toffee-powered rocket sled
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Key Info
  • Building a toffee-powered rocket sled
  • Duration: 03:13
  • Presenter Jem builds a rocket to power a railway sled to more than 200mph, using a mixture of toffee and laughing gas. The expansion of the gas inside the rocket chamber sends the sled powering down a 200-metre track. Only the use of large barrels of water as buffers actually stops the rocket. Published as part of the Bang Goes the Theory website: bbc.co.uk/bang/. Please note this clip is only available in Flash.
  • Subject:

    Science

       Topic:

    Changing Materials: Irreversible Change

  • Keywords: fuel, calories, forces, physics, energy, propulsion, speed, BangGoesTheTheory
Ideas for use in class
  • Share the video and discuss the scientific processes involved. Pupils could watch the video and create their own labelled diagram of the rocket and an explanation of the physical processes at work which cause the sled to move.
Background details
  • Clip language : English
  • Aspect ratio : 16x9
Video options
  • Location of Flash Video clip:

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