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What is the natural satellite of the Earth called?
A. The Sun
B. The Moon
C. Mars
D. Venus
Correct Answer Is Option = The Moon
Notes / Explanation
The natural satellite of the Earth is called the Moon, and it is the familiar body that we see in the night sky and that moves around the Earth. A natural satellite is a body that moves in orbit around a planet, held by the pull of the planet's gravity, and the Earth has one such satellite, the Moon, which orbits around the Earth. The Moon is a large, rocky, ball-shaped body, considerably smaller than the Earth, and it has no light of its own, so that the light we see coming from the Moon is in fact sunlight that is reflected from its surface. As the Moon moves around the Earth, the amount of its sunlit surface that we can see from the Earth changes, which is why the Moon appears to go through a cycle of different shapes, or phases, from a thin crescent to a full round shape and back again, over the course of about a month. The surface of the Moon is covered with craters, mountains and flat plains, and it has no atmosphere and no liquid water on its surface, so that it is a lifeless and barren world, subject to extremes of heat and cold. The Moon is the only body beyond the Earth on which human beings have so far set foot, having been reached by astronauts who travelled there and walked upon its surface, which was one of the greatest achievements in the history of exploration. The Moon has important effects on the Earth. Its gravity is the main cause of the tides, the regular rising and falling of the level of the sea, and the Moon has long been important to human beings for the measuring of time, since the cycle of its phases forms the basis of the month and of various calendars. The Moon has also long been an object of wonder, beauty and inspiration. The study of the Moon and its features, phases and effects is an important part of the study of the solar system. For PPSC and other competitive examinations, the key points to remember are that the natural satellite of the Earth is called the Moon, that it is a rocky body that orbits the Earth and shines by reflecting the light of the Sun, that it appears to go through phases as the amount of its sunlit surface visible from the Earth changes over about a month, and that its gravity is the main cause of the tides of the sea, while it is also the only body beyond the Earth on which human beings have set foot.
