UNIVERSE
SURVEY OF THE PLANETS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Physically changing size and shape
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Moving closer and then farther away from Earth
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Reflecting a different amount of light due to the position with Earth and the Sun.
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Having craters on its surface
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Detailed explanation-1: -The Moon doesn’t emit (give off) light itself, the ‘moonlight’ we see is actually the Sun’s light reflected off the lunar surface. So, as the Moon orbits the Earth, the Sun lights up different parts of it, making it seem as if the Moon is changing shape.
Detailed explanation-2: -The revolution of the Moon around the Earth makes the Moon appear as if it is changing shape in the sky. This is caused by the different angles from which we see the bright part of the Moon’s surface. These are called “phases” of the Moon.
Detailed explanation-3: -Our Moon’s shape doesn’t really change-it only appears that way! The “amount” of Moon that we see as we look from Earth changes in a cycle that repeats about once a month (29.5 days). The relative positions of our Sun, Earth, and Moon, cause these changes.
Detailed explanation-4: -During its elliptical journey around Earth, the Moon moves through ‘phases’, the term we use to describe how much of the lunar disc appears illuminated as seen from Earth.