19
QuizMultiple Choice

Circular Motion and Gravitation — Test

Question 19 • Physics

Hakeem wants to explain why only one side of the moon is visible from Earth. Which comparison would provide the best support?

Answer
A
the orbital period of the moon with the rotational period of the Earth
B
the orbital period of Earth with the orbital period of the moon
C
the orbital period of Earth with the rotational period of the moon
D
the orbital period of the moon with the rotational period of the moon

Explanation

The same side of the Moon always faces Earth because the Moon rotates once on its axis in about the same time it takes to orbit Earth. Comparing the Moon’s orbital period with its rotational period shows this synchronization. Therefore, the best comparison is the Moon’s orbital period with the Moon’s rotational period.

AI-written and checked against the verified answer.

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