GK
SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Mercury rotates faster than Earth does.
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Mercury has a smaller mass then Earth does.
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Mercury is much closer to the Sun than Earth is.
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Mercury has a thinner atmosphere than Earth does.
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Detailed explanation-1: -On the giant gas planets, Jupiter, Saturn, Uranus, and Neptune, we do not see any craters because there is no visible solid surface for the meteors to hit. On Mercury, where there is no atmosphere, there is no weather to erode away the craters, so most of the craters are still visible.
Detailed explanation-2: -There are several reasons why the surfaces of the Moon and Mercury have so much more craters than the Earth. One reason is that the Moon and Mercury have little to no atmosphere. The presence of an atmosphere helps objects that are going to hit the surface to disintegrate or burn out.
Detailed explanation-3: -Impact craters provide insights into the age and geology of a planet’s surface. The Martian surface contains thousands of impact craters because, unlike Earth, Mars has a stable crust, low erosion rate, and no active sources of lava. So, impact craters on Mars are not obliterated as they are on Earth.