Multiple Choice
What is the best description of the Earth's rotation over its entire history?
A) It has periodically reversed directions, as the magnetic polarity reversals show.
B) It has been constant over the entire history of the solar system.
C) It undergoes abrupt changes, as the magnetic variations show.
D) It has slowed down very gradually at about .0015 seconds per century.
E) It has sped up at about .013 seconds per century.
Correct Answer:
Verified
Correct Answer:
Verified
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