Question 1374Navigation General70% to pass
The period of revolution of the Moon is _______________.
AI Explanation
The correct answer is B) about 27.3 days.
The period of revolution of the Moon, also known as the lunar month or synodic period, is the time it takes for the Moon to complete one full orbit around the Earth, which is approximately 27.3 days. This is the time it takes for the Moon to cycle through its phases, from new moon to full moon and back again.
The other answer choices are incorrect because: A) the 19-year period is known as the Metonic cycle, which is the time it takes for the Moon's phases to repeat on the same calendar date; C) 365 days is the length of the Earth's orbit around the Sun, not the Moon's orbit around the Earth; and D) 24 hours is the length of one Earth day, not the length of the Moon's orbital period.
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