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6. How far would magma travel into the air?

  • 50 m
  • 50 km
  • 5 km

7. When was the last eruption?

  • 740,000 years ago
  • 700,000 years ago
  • 640,000 years ago
  • 600,000 years ago

8. What is the supervolcano in Yellowstone national park called?

  • yellowtone caldera
  • yellowstone supervolcano
  • yellowstone volcano
  • supervolcano yellowstone caldera

9. How often is there an eruption at yellowstone?

  • every 6 million years
  • every 600,000 years
  • every 60,000 years

10. How much material does a volcano need to eject to be a supervolcano?

  • at least 1000 km³
  • at least 100 km³
  • at least 10,000 km³

11. How many earthquakes are there at yellowstone each year?

  • 10-20
  • 1000-2000
  • 100-200