EVERYDAY SCIENCE

SCIENCE

EARTH SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The same side of the Moon always faces Earth because the Moon’s period of revolution
A
is longer than the Moon’s period of rotation
B
equals the Moon’s period of rotation
C
is longer than Earth’s period of rotation
D
equals Earth’s period of rotation
Explanation: 

Detailed explanation-1: -"The moon keeps the same face pointing towards the Earth because its rate of spin is tidally locked so that it is synchronized with its rate of revolution (the time needed to complete one orbit). In other words, the moon rotates exactly once every time it circles the Earth.

Detailed explanation-2: -Yes! The time it takes for the Moon to rotate once on its axis is equal to the time it takes for the Moon to orbit once around Earth. This keeps the same side of the Moon facing towards Earth throughout the month.

Detailed explanation-3: -The Moon orbits Earth once every 27.3 days and spins on its axis once every 27.3 days. This means that although the Moon is rotating, it always keeps one face toward us. Known as “synchronous rotation, ” this is why we only ever see the Moon’s nearside from Earth.

Detailed explanation-4: -It’s just spinning at exactly the same rate as its orbit – one revolution every 27 days. Effectively, its day is as long as its year. This is no coincidence. It’s called ‘synchronous rotation’ and is a result of the gravitational tug of war between the Earth and the Moon.

Detailed explanation-5: -The moon’s time period of rotation is equal to the moon’s time period of revolution which is 27.3 days.

There is 1 question to complete.