BBC Learning Zone Clips

CLIP 14092

How the Grand Canyon formed

How the Grand Canyon formed
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Key Info
  • How the Grand Canyon formed
  • Duration: 05:47
  • The creation of landforms may take millions of years but it is not always a slow, steady process. Features such as the Grand Canyon are created by short-lived, extreme events called flash floods. Heavy rain falling on dry, parched ground quickly runs over the land and creates powerful rivers in what are usually dry creeks. Animated sequences show the effects of this in dramatic detail and emphasise the danger to visitors in the canyon who are lulled into a false sense of security by the hot, sunny weather.
  • Subject:

    Geography

       Topic:

    Rivers

  • Keywords: Grand Canyon, erosion, flash floods, floods, rafting, white water, gorge, rain, thunderstorm, overland flow, canyon, Colorado, river, geology, creek, timemachine
Ideas for use in class
  • An excellent resource to use when teaching about the erosive power of moving water.
Background details
  • Clip language : English
  • Aspect ratio : 16x9

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