On a clear night when an observer in Los Angeles sees a first quarter moon, an observer in London would see
A) a full moon.
B) a first quarter moon.
C) a new moon.
D) a third quarter moon.
E) any of the above, depends on the time.

Question

Quizplus · Accepted Answer

The phase of the moon does not depend on the location of the observer, but rather on the relative positions of Earth, the moon, and the sun. Therefore, an observer in London would also see a first quarter moon.

On a Clear Night When an Observer in Los Angeles