How does the moon change from crescent moon to disc and from disc to crescent moon day by day?

The moon itself does not emit light, but only reflects a part of the sunlight shining on it, so that for observers on the earth, with the change of the relative position of the sun, the moon, and the earth, the moon takes on different shapes on different days, which is the periodic change of the moon phase.

The cycle of the phases of the moon is the day, called a synodic month, which is the ** of the month and week in the calendar. This time is longer than the time it takes for the Moon to revolve (sidereal moon), because when the Moon revolves around the Earth, the Earth also revolves around the Sun, and a synodic moon The Moon orbits about (360+360* degrees (the revolution only orbits 360 degrees).

So a sidereal month is about 29, 53, 360, 389, 11, 27, 32 days.

The order of the change of the phases of the moon is: New Moon - Eemei Moon - First Quarter Moon - Wax and Convex - Full Moon - Deficit Moon - Lower Quarter Moon - Waning Moon - New Moon, and so on, the moon phase changes are cyclical, and the cycle is about one month.

Because the earth revolves around the sun, one revolution is a year. The earth rotates again, and one revolution is one day. The moon revolves around the earth for a month. When the moon turns into a straight line between the sun and the earth, day by day the crescent moon becomes a disc and from the disc to the crescent.

The moon today changes from crescent moon to disc and from disc to crescent moon because the part of the moon that you see from the earth is constantly changing.

The moon changes from crescent moon to full moon and from full moon to crescent moon because the moon is obscured by the earth in the process of moving, and then it is created. Because of the lack of months,

The moon has a crescent moon day by day and turns into a happy disc and a double disc into a crescent, because the moon is blocked by the earth in the process of movement, so there will be a difference between a crescent moon and a full moon.

Affected by the rotation of the earth, the orbit is blocked, which causes the moon to be round and uncertain, round and change, and the cycle is one month.

One turns from a crescent moon into a disc because the earth blocks the moon's rays from shining on the moon. If you block it completely, you won't be able to see the moon, and if you don't block it at all, the moon will be round.

The moon turns into a crescent moon and a disc day by day, and these changes are mainly because the earth blocks the light that the sun shines on the moon.

The moon's transformation into a crescent moon and a disk is caused by the moon's rotation and its revolution with the earth.

Generally, the moon will become very far away on the 15th of the lunar calendar, so it is generally a full moon at this time, and the moon changes from the crescent moon.

Day by day, the crescent moon becomes the lunar disk, and the male crosses next to it, the real crescent, he is well, the rotation between the earth and the sun.

The moon is different at several times of the month, and it is composed of the first quarter moon, the full moon, and the second quarter moon.

This may be the scene formed by the movement of the moon and the movement of the earth, and you can check the nature for details.

If the moon is right between the earth and the sun, then the sun's rays will shine on the side of the moon facing away from us. Therefore, we cannot see anything from the moon. When the Moon moves from west to east at 12 times the speed of the Sun, the next night, it will appear a little to the east of the Sun, so that we can see exactly where the western edge of the Moon is illuminated.

You can also tell you how the moon becomes a disk, a crescent moon.

If the Moon is exactly on Earth and Sun.

I asked how it became a disc?

Every year during the Mid-Autumn Festival, we will eat moon cakes and admire the moon, and in those days, the moon is very garden, so the question is, we sometimes see the round moon, sometimes we see the crooked crescent?

Before understanding the problem of the full moon and the crescent moon, we must first understand that the light of the moon comes from. Yes, the moonlight comes from the sun, the moon itself does not emit light, its light comes from the reflection of the sun's light, so the side of the moon towards the sun will be bright, and the other side will be dark. The moon revolves around the earth, and the earth revolves around the sun.

When the position of the Moon changes, the Sun illuminates the Earth, sometimes facing away from the Earth, and sometimes partly facing the Earth. However, we can only see the part of the moon illuminated by the sun, so sometimes we see a bright moon hanging high in the sky. Sometimes you can only see part of it, a crooked crescent moon hanging in the sky, and even sometimes, you can't see the moon.

The first day of the lunar month is called the New Moon, and the Moon at this time is between the Earth and the Sun. The bright area is facing away from the earth, and people can't see the moon on the earth, and the moon is between the earth and the sun. If all the bright spots are facing the Earth, then we will see a full moon.

The time when the full moon appears is about the fifteenth and sixteenth of the lunar calendar of each month, which is also called the full moon and the prosperous day.

On the seventh or eighth day of the lunar calendar of each month, only half of the bright area faces the earth. At that time, one can see the half moon, which is like the first quarter moon and the corresponding second quarter moon. Even on the 22nd or 23rd of the lunar calendar, you can only see half a moon, which is like the last quarter moon.

At this point, I believe everyone has figured out that the position of the moon determines what kind of moon we see, the new moon, the full moon, the first quarter moon, and the last quarter moon. On August 15 every year, the autumn is high and cool, and the full moon hangs high, which is the annual Mid-Autumn Festival of our country, and it is a good day to enjoy the moon and eat moon cakes, a good day for family reunion.

Because sometimes something covers the moon, and we stand at different angles, and the shape we naturally see is different, because the earth also rotates, and I think this is a very normal situation.

This involves the movement of the earth and the moon, which belongs to the laws of astronomy and celestial movements, when the fifteenth day of the lunar month makes it possible to see the complete moon on the earth, and in the first and second months of the month, the moon is obscured, so it is seen in the shape of a crescent.

Because the Moon revolves around the Earth, sometimes it is a full moon and sometimes it is a crescent moon.

1.This is because the Earth is between the Moon and the Sun, the Moon revolves around the Earth, and the position of the Earth changes by revolving around the Sun.

2.When the earth blocks only part of the sun's light, the sun's rays that are not blocked will shoot towards the moon and be reflected by the moon, and the moon will be seen in a crooked way.

3.When the Earth is completely unblocked from sunlight, the moon will become round when the sun hits the entire moon. This phenomenon will appear periodically, that is, every time we say that the moon will become round on the fifteenth day of the lunar calendar!

The reason why the moon has a round and a gap is because the moon orbits the earth, and the moon itself does not emit light, and it is the reflection of the sun's light that we can see the moon.

Although it is round in itself, what is the main thing? Mainly the reflection of the sun's rays from the sun, my kindergarten.

In the month of the lunar calendar, the moon constantly revolves around the earth, so the position of the stove is different every day, and when we look up and see the moon, its appearance is different.

People have joys and sorrows, the moon is cloudy and sunny, and the moon itself is round, so the moon is also round.

About the phases of the moon. You just have to remember: "up up West West, down down East East".

First quarter moon. The first quarter of the moon comes out in the middle of the night, and comes out in the west, with the moon facing west. Last Quarter Moon:

Contrary to the first quarter moon On the first day of the lunar month, when the moon moves between the sun and the earth, the moon faces the earth with its dark side, and rises and falls with the sun, so people cannot see it. The phase of the moon at this time is called the "new moon" or "new moon". After the new moon, the moon gradually moves out of the area between the earth and the sun, and then we begin to see a small part of the moon illuminated by the sun, which is shaped like a curved eyebrow, so the moon phase at this time is called "the moon of the eyebrow".

This "crescent moon" can only be seen in the western sky in the evening. Around the eighth day of the lunar calendar, the moon has moved to a 90° angle east of the sun as seen from the earth.

At this time, we can see the bright half of the moon to the west, and the moon phase at this time is called "winding". The first quarter moon can only be seen in the first half of the night, and it submerges into the west in the middle of the night. After the winding, the moon becomes fuller day by day, and we can see most of the bright hemisphere of the moon, and the phase of the moon at this time is called "gibbous moon".

It's time for the lunar calendar. Ten.

At 5 or 16 o'clock, the moon runs directly opposite the sun on the celestial sphere, and the sun and the moon are 180 degrees apart, that is, the earth is located between the sun and the moon. At dusk, the full moon rises in the east and dawns.

When it sinks to the west. After the full moon, the moon becomes "thin" as the sun and moon positions get closer. It goes through the gibbous moon, the last quarter and the crescent moon in turn, and finally, returns to the position of the new moon.

In China, it is customary to call the "Moon" in the second half of the month "the waning moon". The first and second quarters, the waxing crescent and waning moons are similar in appearance, but they appear at different times, in different positions, and in the direction of their bright surfaces. The crescent moon and the first quarter moon appear in the western sky in the evening and the first half of the night, respectively, and their "faces" are facing west, that is, the western half is bright; The waning moon and the last quarter moon appear in the eastern hungry sky at dawn and the second half of the night, respectively, and their "faces" are facing east, that is, the eastern half is bright.

The average time it takes for the moon to move from the new moon position to the new moon position again is days, which means that the cycle of change of the phases of the moon is on average days, which is called a "synodic month".

In a word: the moon slowly becomes round first, and then slowly becomes absent.

You can take a look at the moon phase chart in August, I hope it will help you!

Sometimes the moon is round, sometimes it's a crescent, because of this: the moon.

It revolves around the earth all the time.

The sun's rays shine on the moon, illuminating up to half the lunar surface. However, this illuminated half-moon surface cannot be observed by all humans on Earth every time, and the area of the moon that can be seen changes from time to time as the moon rotates.

The shape of the moon is generally described in four popular words: full moon, half moon, crescent moon, and moon. In fact, these planets, which are used to describe them on a daily basis, are called moon phases in scientific terms.

And the phases of the moon can be divided into eight phases, namely: the new moon (corresponding to the moon can not be seen), the Emei moon, the first quarter moon (that is, the half moon), the waxing gibbous moon, the full moon, the waning gibbous moon, the second quarter moon (half moon), and the waning moon.

It is the earth that blocks the light of the sun.

The moon itself does not emit light, and the moon can usually be seen because the moon reflects the sun's light, and when the moon, the sun, and the earth are in the same straight line, and the earth is between the moon and the sun, because the sun's light is blocked by the earth, when the moon only partially enters the earth's umbra, there will be a partial lunar eclipse, which is usually the first to refer to the crescent.

If the moon enters the earth's umbra completely, the moon cannot reflect the sun's light, and a total lunar eclipse is observed, because the earth is larger than the moon, so there will be no annular lunar eclipse.