Multiple choice

What are the phases of moon caused by?

  1. The rotation of Earth on it's axis

  2. The rotation of the moon on it's axis

  3. The revolution of Earth around the sun

  4. The revolution of the moon around Earth
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D Correct answer
Explanation

The phases of the moon are caused by its changing position relative to the Earth and the sun as it orbits our planet. As the moon revolves around Earth, we see varying portions of its illuminated half, creating the monthly cycle of phases.

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