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Author Question: The average polarity interval between magnetic reversals over the last 15 million years has been ... (Read 99 times)

Charlie

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on: Jul 16, 2018
The average polarity interval between magnetic reversals over the last 15 million years has been
 
  A) 20,000 years.
  B) 200,000 years.
  C) 2,000,000 years.
  D) 2,000 years.

Question 2

The magnetic north pole migrates about
 
  A) 40 km per decade.
  B) 40 cm per day.
  C) 40 m per month.
  D) 40 km per year.


helenmarkerine

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Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: D


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