What Is the MOST Probable Heat Source That Produced Extensive

question 269

Multiple Choice

What is the MOST probable heat source that produced extensive, maybe even total, melting of the Moon at an early stage in its history?

• A) nuclear fusion reactions occurring in its core
• B) intense sunlight from the early and very active Sun
• C) tidal flexing and distortion caused by its motion around Earth
• D) the impact energy of meteoritic bombardment

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Definitions:

Rate of Return

The upward or downward movement in an investment's value, measured across a specific interval, and expressed relative to the investment's initial value.

Cumulative Gain

The total amount of gain or profit accumulated over a specific period of time.

Rate of Return

The percentage of profit or loss on an investment over a specified period.

Capital Gain Yield

The rise in the price of a security, like a stock or bond, leading to a profit if sold; expressed as a percentage increase over the investment's cost.