UNIVERSE
SURVEY OF THE PLANETS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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No one has ever been to the moon to disturb them
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There is no atmosphere or weather on the moon
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The temperature is too cold to change them
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There is so much gravity on the moon that pulls them
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Detailed explanation-1: -Because the Moon is geologically inactive and doesn’t have an atmosphere, it has many thousands of craters on its surface.
Detailed explanation-2: -Because of tectonics, the surface of Earth is recycled many times throughout its long history. As a result, very few rocks on Earth are as old as the rocks on the Moon. The Moon has not had tectonics for billions of years. That’s a lot more time for craters to form and stay put.
Detailed explanation-3: -This synchronous rotation is a characteristic shared by several moons orbiting other planets in our solar system. Since our Moon does indeed rotate, the impacts that produced the craters that we see are distributed throughout the Moon’s surface.
Detailed explanation-4: -The escape velocity on the surface of moon is lesser than the RMS velocity of the molecules of gas at the surface temperature of moon. Therefore, the gas molecules escape and hence moon cannot hold an atmosphere.
Detailed explanation-5: -The illuminated shape of the Moon that we see from the Earth appears to change continuously as the moon revolves around the Earth during its 28 day journey. This apparent change in the moon’s shape is a consequence of us seeing changing amounts of the illuminated surface.