Questions: Sections 3-4

Comprehension Questions

  1. About how long did the Paleozoic Era last?
  2. What covered all of North Dakota several times?
  3. What began growing at the edges of the seas?
  4. What type of animal developed during the Paleozoic Era?
  5. How was sedimentary rock formed?
  6. What is the bowl-shaped region that covers much of western North Dakota called?
  7. What is a fossil?
  8. Name three fossil fuels.
  9. Petroleum and natural gas were formed from what?
  10. Where in North Dakota are many oil wells located?

Critical Thinking Questions

  1. Why didn’t people fish in the seas that covered North Dakota?
  2. Why doesn’t eastern North Dakota have oil wells?