Question

PLEASE HELP PLEASE I BEG YALL!!!

Approximately how long does it take for the Moon's phases to change from a NEW moon to a FULL moon?
A. Four weeks
B. Two weeks
C. Three weeks
D. One week

Answer 1

It takes approximately two weeks for the Moon to phase from a new moon to a full moon, as part of the 29.5-day lunar cycle.

Step-by-step explanation:

It takes approximately two weeks for the Moon's phases to change from a new moon to a full moon. The entire lunar cycle, from one new moon to the next, takes about 29.5 days. As the Moon orbits around the Earth, we observe different phases, which are dictated by the relative positions of the Earth, Moon, and Sun. The time between the first quarter and full moon is about a week and similarly, from full moon back to the last quarter. The cyclical phases illustrate the waxing and waning visibility of the Moon from Earth, culminating in the full moon phase approximately two weeks after the new moon.

Answer 2

Answer: B. Two weeks

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Step-by-step explanation:

It takes approximately 29.5 days for the moon to do a full orbit around the earth. This is about 4 weeks because (29.5)/7 = 4.214; to put it another way, it takes about a month for the moon do a full cycle.

So when going from a new moon to the next new moon, that's four weeks. We cut this in half when going from a new moon to a full moon (because such a duration is half the full cycle). Therefore, the answer we want is 4/2 = 2 weeks.

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Another approach is to search out "moon phase charts". You can also search out "lunar calendar" to have it show when the next full moon and new moon will occur. At this present time (October 2021), the next full moon is October 20th and after that the next new moon is November 4th. This is a timespan of 15 days or 15/7 = 2.14 weeks, which rounds to 2 weeks.