GK
SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the force of gravity exerted on the Moon by Earth
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the nuclear energy exerted on the Moon from Earth
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the thermal energy exerted on the Moon from Earth
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the electromagnetic force exerted on the Moon by Earth
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Detailed explanation-1: -It is the equilibrium between centrifugal force caused by the rotation of moon and the gravitational force between moon and earth which ensures that the moon is in it’s orbit.
Detailed explanation-2: -The moon’s gravitational pull on the Earth is the main cause of the rise and fall of ocean tides. The moon’s gravitational pull causes two bulges of water on the Earth’s oceans-one where ocean waters face the moon and the pull is strongest and one where ocean waters face away from the moon and the pull is weakest.
Detailed explanation-3: -Gravity is one major force that creates tides. In 1687, Sir Isaac Newton explained that ocean tides result from the gravitational attraction of the sun and moon on the oceans of the earth (Sumich, J.L., 1996).