Question

1. which sequence of moon phases could be observed from earth during a 2 - week period?

key
full moon phase
new moon phase
(a)
(b)
(c)
(d)

Explanation:

The Moon's phases progress from New Moon to Waxing Crescent, Waxing Gibbous, Full Moon, Waning Gibbous, Waning Crescent, and back to New Moon over about a month. In a 2 - week period, if we start from Full Moon, it will wane. The sequence from Full Moon to Waning Gibbous to Waning Crescent to New Moon (Option C) is correct as it follows the waning phase order. Option A is incorrect as it shows a progression towards Full Moon which would take more than 2 weeks if starting from a crescent. Option B starts from New Moon but the last phase (a crescent) after a half - moon is incorrect in order. Option D has an incorrect order with New Moon coming too soon after the half - moon.

Answer:

C.