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Author Question: In the 1950s a plot of the position of the magnetic north pole through time revealed that A) ... (Read 115 times)

serike

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on: Jul 29, 2018
In the 1950s a plot of the position of the magnetic north pole through time revealed that
 
  A) either the magnetic poles had migrated through time or the continents had moved.
  B) polar magnetization varied from pole to pole.
  C) over the past 500 million years the geographic poles changed position at least once or twice.
  D) all of the above.

Question 2

What are glacial striations, and how did Wegener use them to support his hypothesis of continental drift?
 
  What will be an ideal response?


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peter

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: Glacial striations are gouges or grooves that scratch the ground surface as a glacier moves over the land surface. They reveal the direction of ice flow. Wegener used striations on several different continents to show that at one time the continents had been joined together.


serike

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


peter

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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