Question : The moon moves around the Earth in about_______days.
Option 1: 21
Option 2: 23
Option 3: 27
Option 4: 25
Correct Answer: 27
Solution : The correct answer is 27 .
The moon takes 27 days to complete one orbit around the Earth. This period is known as the sidereal month. The moon's orbit around the Earth is not perfectly circular but elliptical. The moon goes through different phases as it orbits the Earth. These phases include the New Moon, First Quarter, Full Moon and Last Quarter. The cycle of phases, from one New Moon to the next, is approximately 29.5 days, known as a synodic month.
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