Approximately how long will it take for the dark-light dividing line on the Moon, the terminator, to move through 90° of lunar longitude?
A)91 days or 1/4 year
B)6 hours or 1/4 day
C)The dark-light line never moves around the Moon since the Moon does not rotate on its axis.
D)7 days

Question

Quizplus · Accepted Answer

The Moon takes about 29.5 days to complete one full rotation and orbit around the Earth. Therefore, the terminator moves through 90° of lunar longitude in approximately 7 days, which is about one-quarter of the lunar cycle.

Approximately How Long Will It Take for the Dark-Light Dividing