Question

An observer on Earth sees the phases of the Moon because
1. the Moon revolves around the Sun
2. the Moon rotates on its axis
3. Earth revolves around the Sun
4. the Moon revolves around Earth

Answer 1

Answer:

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Answer 2

4. the Moon revolves around Earth is the correct answer.

1. Moon does not have light of its own but shines due to reflection of sun's light from its surface.
2. The moon revolves around Earth and Earth revolves around sun.
3. As the moon revolves around Earth, the side of the moon receiving sunlight changes. This part is visible on Earth as phases of moon.