How much of the total surface of the Moon is illuminated by the Sun when it is at quarter phase?
A) all
B) one-half
C) very little
D) one-quarter

Question

Quizplus · Accepted Answer

At the quarter phase, half of the Moon's surface that faces Earth is illuminated by the Sun, making it appear as a half-circle from Earth. The other half facing away from us is also illuminated, totaling one-half of the Moon's total surface being lit.

How Much of the Total Surface of the Moon Is