What Is the Best Description of the Earth's Rotation Over

question 90

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.

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