To keep a long story short, the orbit of the moon around the earth is not a perfect circle, but rather, it is a more of an oval shape. Thus, the distance between these two bodies is different everyday.
Moreover, the interaction between the moon's and earth's gravitational forces influences the tides (ever wondered about high and low tides?), which eventually leads to a retardation in the speed of the earth's rotation. (Thus, the duration of one Earth Day is increasing at the rate of one second per 100000 years)
The result of the slower rotation is the increasing strength of the moon's centrifugal force (the "outward" force an object has when it is spinning), relative to Earth's gravity.
Therefore, the moon is retreating from the earth every single day.
Source: Illustrated Encyclopedia of Science and Nature -- Space and Planets. Published by TimeLife.
All places have the same moon phase because the moon takes 27 days to revolve around the Earth and the Earth takes 24 hours to rotate. The speed of rotation is faster than the moon's revolution making the moon appear unmoving and all parts of Earth having the same moon phase.
It never does because the same face of the moon is always pointed at Earth. This is due to the fact that the moon revolves around Earth at the same speed it rotates on it's axis, so Earth remains in the same relative location in the sky on the moon.
Yes, the moon orbits the Earth in the same direction that the Earth rotates, from west to east. This is why we always see the same side of the moon from Earth, a phenomenon known as tidal locking.
The Earth and Moon appear the same size in the sky when viewed from Earth because the Moon is about 1/4 the size of Earth and is about 1/4 as far away from Earth as the Earth is from the Moon. This alignment creates the illusion that they have the same apparent size.
No, they do not have the same mass. The moon has much less mass than Earth.
Yep
The phenomenon of the moon always keeping the same face toward Earth is due to its synchronous rotation, which means that its rotation period is the same as its orbital period around Earth. This is caused by gravitational forces between the Earth and the moon, which have resulted in the moon's rotation becoming synchronized with its orbit.
no the earth is bigger than the moon
The moon's average density is about the same as the density of mantle of the Earth.
No. If it did, then some people on earth would always see the moon in the sky, andsome other people on earth would never see the moon in their sky. Instead, everybodyon earth sees the moon rise and set, meaning that different parts of the earth are turningto face it.
All places have the same moon phase because the moon takes 27 days to revolve around the Earth and the Earth takes 24 hours to rotate. The speed of rotation is faster than the moon's revolution making the moon appear unmoving and all parts of Earth having the same moon phase.
The moon keeps the same hemisphere facing Earth because the gravitational force between the two is equal to the centrifugal force, causing the moon to stay in a stable position.
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It never does because the same face of the moon is always pointed at Earth. This is due to the fact that the moon revolves around Earth at the same speed it rotates on it's axis, so Earth remains in the same relative location in the sky on the moon.
Yes, the moon orbits the Earth in the same direction that the Earth rotates, from west to east. This is why we always see the same side of the moon from Earth, a phenomenon known as tidal locking.
In a gravitational situation, the forces are exactly equal in both directions.-- The Earth attracts the moon with a force that is exactly the same as the forcewith which the moon attracts the Earth.-- You attract the Earth with exactly the same amount of force as the Earth attracts you.-- Your weight on Earth is exactly the same as the Earth's weight on you.
The Earth and Moon appear the same size in the sky when viewed from Earth because the Moon is about 1/4 the size of Earth and is about 1/4 as far away from Earth as the Earth is from the Moon. This alignment creates the illusion that they have the same apparent size.