L7 supervolcano ap 2013

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L7 supervolcano ap 2013

  1. 1. Supervolcanoes! • AIMS:  To know about the characteristics of a Supervolcano eruption  To understand the likely effects of an eruption
  2. 2. 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.
  3. 3. 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!
  4. 4. A caldera!
  5. 5. Mr Pinks in a small caldera!
  6. 6. Stupervolcano Case Study: Yellowstone Supervolcano p22 Greater London on the same scale
  7. 7. Yellowstone • Watch the video here (from 4.00) to see what Yellowstone and Old Faithful look like.
  8. 8. 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
  9. 9. 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
  10. 10. 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! ------- ------ ------- ------ ------- ------ ------- ------ ------- ------ ------- ------ ------- ------ ------- ------ ------- ------ ------- ------

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