What causes the Moon's phases?
Correct answer: A. The Sun lights up only one half of the Moon and as the Moon orbits the Earth we can sometimes see the unlit side of the Moon.
- A. The Sun lights up only one half of the Moon and as the Moon orbits the Earth we can sometimes see the unlit side of the Moon.
- B. The Sun lights up only one half of the Moon and as the Sun orbits the Earth we can sometimes see the unlit side of the Moon.
- C. The Earth's shadow falls on the Moon, blocking the sunlight.
- D. The Moon's shadow falls on the Earth, blocking the sunlight.Physics
Explanation
The Sun always illuminates half of the Moon, but as the Moon orbits Earth, we see different portions of that lit half. Earth’s shadow causes a lunar eclipse, not the regular phases of the Moon.
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