Why Do We See Different Phases of the Moon

question 249

Multiple Choice

Why do we see different phases of the Moon?

• A) The illuminated half of the Moon becomes more or less visible from Earth as the Moon orbits Earth.
• B) The Moon's distance from Earth changes as it moves in its elliptical orbit, thereby changing its apparent brightness.
• C) Earth's shadow gradually moves over the Moon's surface as the Moon orbits Earth.
• D) The Moon's rotation brings more or less of the illuminated hemisphere into view from Earth.

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Definitions:

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