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6. How many cm of ask can collapse a roof of a building?

  • 30cm
  • 19cm
  • 27cm
  • 32cm

7. True of false; it is the largest supervolcano in the world

  • True
  • False

8. What fraction of the USA will be uninhabitable?

  • 2/3
  • 1/3
  • 1/4
  • 4/5

9. How many tonnes of sulphur wil be ejected into the atmosphere?

  • 2000 million
  • 3500 million
  • 1 billion
  • 1800 million

10. What fraction of people affected would die?

  • 4/5
  • 1/2
  • 1/3
  • 2/3

11. If it errupted, what could the ash do?

  • Destroy roads
  • Crush buildings
  • Grow Trees

12. How large is the magma chamber?

  • 80km long, 40km wide, 8km deep
  • 68km long, 37km wide, 10km deep
  • 101km long, 45km wide, 7km deep

13. How many earthquakes happen a year in Yellowstone?

  • 3000
  • 4500
  • 2500
  • 3100

14. How many people could be killed?

  • 43 000
  • 87 000
  • 90 000
  • 89 000