L7 supervolcano ap 2013
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L7 supervolcano ap 2013

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L7 supervolcano ap 2013 L7 supervolcano ap 2013 Presentation Transcript

  • Supervolcanoes! • AIMS:  To know about the characteristics of a Supervolcano eruption  To understand the likely effects of an eruption
  • Supervolcano Characteristics • Emit at least 1,000km³ of material. This is BIG! • They don’t look like a traditional volcano, more a large depression called a caldera, often marked by a rim of higher land around the edges.
  • Caldera Formation Full magma chamber under pressure causes eruption Magma chamber now partially emptied, pressure released Volcano collapses into top of magma chamber Large (60km) crater forms with a steep rim Turn to p22and copythe diagramdown!
  • A caldera!
  • Mr Pinks in a small caldera!
  • Stupervolcano Case Study: Yellowstone Supervolcano p22 Greater London on the same scale
  • Yellowstone • Watch the video here (from 4.00) to see what Yellowstone and Old Faithful look like.
  • Video  Yellowstone video (10 mins)  Make notes on the effects of a future eruption under the title below as we watch the video. Characteristics Effects
  • Some impacts … • Magma would be flung 50km up into the atmosphere • All life up to 1000KM away would be killed by falling ash, lava flows and by the force of the explosion • 100KM³ of lava would pour out of the volcano • Ash in the atmosphere would block out the suns light and trigger a freezing cold volcanic winter; • Crops wouldn’t grow and people would starve • Economies would collapse
  • Task • Produce an article for the Washington Post reporting on • What a super volcano is • What the likely effects the Yellowstone super volcano would be on the USA. Think about the social, economic, environmental and political. Washington PostSuper volcano blows its lid! ------- ------ ------- ------ ------- ------ ------- ------ ------- ------ ------- ------ ------- ------ ------- ------ ------- ------ ------- ------