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6. What gas trapped in rocks is used to work out the temperature at the time of formation?

  • Nitrogen
  • Methane
  • Oxygen
  • Carbon

7. The Earth has how many minor plates?

  • 8
  • 6
  • 9
  • 11

8. Pangaea formed and broke up how many years ago?

  • 300 Ma
  • 200 Ma
  • 400 Ma

9. Gondwana is what?

  • Broken Pangaea
  • A plate boundary
  • Type of Crust

10. Gas trapped in rocks is evidence for...

  • A warming climate
  • A cooling climate

11. The Cambrian explosion was how many years old?

  • 450 Ga
  • 500 Ma
  • 250 Ma
  • 500 Ga

12. The beginning of the last ice age was how many years ago?

  • 3.2 Ma
  • 2.5 Ma
  • 4.5 Ma
  • 6.6 Ma

13. The Earth has how many major plates?

  • 7
  • 6
  • 5
  • 8

14. Ga is how many years ago?

  • 1 hundred
  • 1 billion
  • 1 thousand
  • 1 million

15. The extinction of dinosaurs was how many years ago?

  • 75 Ma
  • 65 Ma
  • 100 Ma
  • 25 Ma

16. Carbon dating only goes back how far?

  • 100,000 years
  • 50,000 yrs
  • 20,000 yrs
  • 10,000 yrs

17. Which crust is younger?

  • Oceanic
  • Continental