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What Can Be Said to Evaluate the Fissure Theory of the Moon's

Question 94

Multiple Choice

What can be said to evaluate the fissure theory of the Moon's origin-the theory that Earth was spinning so rapidly in its semimolten state that a large piece flew out and cooled to become the Moon?


A) The large open area that forms the Pacific Ocean Basin suggests that, in fact, a large mass was torn out of Earth at that location.
B) Continental drift suggests that the Pacific Ocean Basin is only a transient feature on Earth's surface. Thus, this idea does not support the fissure theory.
C) The discovery of iron at the bottom of the South Pole-Aitken Basin is support for a fissure theory, because it suggests that some of Earth's iron was carried off in the fissure.
D) The discovery of water ice in shadowed craters on the Moon supports the fissure theory, because it suggests that water was transferred from the early Earth.

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