OBJECTIVE FORESTRY

FORESTRY

PLANT AND WOOD ANATOMY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Even though the Sun has a mass 27 million times greater than the Moon, the Moon has a greater impact on the Earth’s tides. This is because:
A
The Moon is much closer to the Earth.
B
The Moon has more gravitational force than the Sun.
C
The Moon is made of solid elements instead of gases.
D
The Moon has a faster orbital period.
Explanation: 

Detailed explanation-1: -Although the sun is 27 million times more massive than the moon, it is 390 times further away from the Earth than the moon. Tidal generating forces vary inversely as the cube of the distance from the tide-generating object.

Detailed explanation-2: -The closer objects are, the greater the gravitational force is between them. Although the sun and moon both exert gravitational force on the Earth, the moon’s pull is stronger because the moon is much closer to the Earth than the sun is. The moon’s ability to raise tides on the Earth is an example of a tidal force.

Detailed explanation-3: -The sun is 400 times bigger than the Moon and the gravitational pull exerted by it on the Earth should be much more than that of the Moon. However the Moon is far more closer to the Earth than the Sun. Due to this, the Moon’s pull is experienced much more than that of the Sun.

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