7
QuizMultiple Choice

The Moon — Quiz

Question 7 • Earth and Space Science

What is the best interpretation of how the Earth-Moon system has changed over time?

Answer
A
The Moon has moved steadily farther from Earth, suggesting long-term orbital stability.
B
The Moon's orbit has remained unchanged for hundreds of millions of years.
C
The Moon's distance from Earth increases rapidly, then reverses at regular intervals.
D
The Moon is on a collision course with Earth due to unpredictable gravitational changes.

Explanation

Tidal interactions transfer some of Earth’s rotational energy to the Moon, causing the Moon’s orbit to expand and its average distance from Earth to increase over time. This gradual recession is consistent with long-term orbital stability, not an unchanged orbit or a collision course. The best interpretation is that the Moon has moved steadily farther from Earth.

AI-written and checked against the verified answer.

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