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The effect is called "libration". In fact there are several such effects.
Sometimes we see more of the northern hemisphere, sometimes more of the southern, since the Moon's axis is not exactly perpendicular to the plane of its orbit.
Also, since the Moon rotates at a constant angular speed but moves around the Earth in an ellipse - and therefore doesn't advance the same number of degrees in its orbit every day - we sometimes get to see a bit more of its eastern side, and at other times, more of its western side. In fact this is the most important of the libration effects.
What else can I help you with?
Why is the moon located between the sun and earth?
The Moon is not necessarily located between the Sun and Earth.About half of the time (half of the orbit of the Moon around Earth), the Earth is closer to the Sun than the Moon is. This is the case whenever the Moon surface is more than 50 % lit (more than half moon).At full moon, the Earth is located almost on a straight line between the Moon and the Sun.At some full moons, there is a lunar eclipse, where the Earth is located so close to a straight line between the Moon and the Sun and that the Earth casts shadow on the Moon.Similarly, half of the time (half of the orbit of the Moon around Earth), the Moon is closer to the Sun than the Earth is. This is the case whenever the Moon surface is less than 50 % lit (less than half moon).At new moon, the Moon is located almost on a straight line between the Sun and Earth.At some new moons, there is a solar eclipse, where the Moon is so close to being on a straight line betwen the Sun and Earth that the Moon covers the Sun when seen from the Earth.But the distance from the Moon to Earth is always much less than the distance from the Moon to the Sun. This is because the Moon orbits Earth in almost a circle with an average radius of 385,000 kilometers, whereas Earth (and with it, the Moon) orbits the Sun in almost a circle with an average radius of 150,000,000 kilometers.The Sun is always around 400 times as far from Earth as the Moon is.
What weights more earth or moon?
The mass of the Earth is six times more than the moon.
Waxing moon phase in which one half of the moons lighted side can be seen from Earth?
The waxing moon phase is when the moon is transitioning from new moon to full moon, and the illuminated portion of the moon is growing larger each night. During this phase, we can see more than half of the moon's lighted side from Earth.
Does the half moon weigh more than the full moon?
No. they weigh the same. The terminology of a half moon refers to how much of the moon can be seen.
What plant has more moon then earth?
Sunflower has more moon than Earth because it grows towards the sun more.
Does a gibbous moon appears more than half illuminated to people on earth?
Yes. A gibbous moon is a three-quarter moon.
What are creasent moon first quarter and waning and waxing gibbous are some of?
These are different phases of the moon based on its appearance as observed from Earth. Crescent moon is when less than half of the moon is visible, first quarter is when half of the moon is visible, waning gibbous is when more than half but less than full moon is visible, and waxing gibbous is the phase when more than half but less than full moon is visible.
What is the differnce between Gibbous and Crescent?
A crescent is 1/4 of a full moon while a Gibbous is 3/4 of a full moon.
What is The moon has more gravity than the earth.?
"The moon has more gravity than the earth." is a question (about the moon and gravity).
Why is a full moon less brighter than a half moon?
the full moon is more closer to the sun than the half moon
Do you weight more on the moon then you do on earth?
No; you weigh more on the Earth than you do on the moon.
When can you see more than one half but less than all of the Moon's lighted side?
You can see more than one half but less than all of the Moon's lighted side during the phases known as gibbous moons. This occurs when the Moon is more than half illuminated but less than fully illuminated by the Sun from our perspective on Earth.
When more than half of the moon is visible what phases is it?
when the moon half shows itself, it's called a half moon.
How far is your moon from the sun?
My moon averages about 93 million miles from the sun, same as the Earth. Half the time it's slightly closer than the Earth is, and half the time it's slightly farther, but the difference is never more than about 1/4 of a percent of Earth's distance from the sun.
How is the Moon and Earth different from the Earth?
The moon is much more smaller than the Earth.
Why is the moon located between the sun and earth?
The Moon is not necessarily located between the Sun and Earth.About half of the time (half of the orbit of the Moon around Earth), the Earth is closer to the Sun than the Moon is. This is the case whenever the Moon surface is more than 50 % lit (more than half moon).At full moon, the Earth is located almost on a straight line between the Moon and the Sun.At some full moons, there is a lunar eclipse, where the Earth is located so close to a straight line between the Moon and the Sun and that the Earth casts shadow on the Moon.Similarly, half of the time (half of the orbit of the Moon around Earth), the Moon is closer to the Sun than the Earth is. This is the case whenever the Moon surface is less than 50 % lit (less than half moon).At new moon, the Moon is located almost on a straight line between the Sun and Earth.At some new moons, there is a solar eclipse, where the Moon is so close to being on a straight line betwen the Sun and Earth that the Moon covers the Sun when seen from the Earth.But the distance from the Moon to Earth is always much less than the distance from the Moon to the Sun. This is because the Moon orbits Earth in almost a circle with an average radius of 385,000 kilometers, whereas Earth (and with it, the Moon) orbits the Sun in almost a circle with an average radius of 150,000,000 kilometers.The Sun is always around 400 times as far from Earth as the Moon is.
Which has more gravity earth or moon?
The Earth has about six times more gravity than the Moon.
