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CLIP 14085

Forest fires – how and why the first fires started

Forest fires – how and why the first fires started
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Key Info
  • Forest fires – how and why the first fires started
  • Duration: 03:57
  • Professor Iain Stewart explains how wildfires only started relatively recently on Earth, about 400 million years ago. It wasn't until this period that all the ingredients for a fire - fuel, enough oxygen, and a spark - were present. Lightning has been frequent and widespread on the planet ever since its existence and once vegetation established itself it was only a matter of time before fires would take place only stopping when the fuel ran out or the rains came.
  • Subject:

    Geography

       Topic:

    Ecosystems

  • Keywords: Fire, wildfire, geology, photosynthesis, oxygen, lightning, atmosphere, Iain Stewart, howearthmadeus, vegetation, planet, fuel, howearthmadeus
Ideas for use in class
  • Could be useful when discussing the time scale of the development of vegetation on the earth and to teach about photosynthesis.
Background details
  • Clip language : English
  • Aspect ratio : 16x9

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