The external and internal structure of the Moon is???

First of all, there is no circle on the surface of the moon.

The Moon is the only natural satellite of the Earth, and it has a close evolutionary connection with the Earth. Based on the analysis of the Apollo 11 and 12 lunar seismological observators built on the moon, as well as the study of the lunar surface and lunar rocks, it is known that the current lunar interior also has a sphere structure, but it is not exactly the same as the inner sphere structure of the earth. The surface of the moon has a layer of lunar soil that is several meters to tens of meters thick.

The entire Moon can be considered to consist of the lunar lithosphere (0 1000 km), the asthenosphere (1000 1600 km) and the lunar core (1600 1738 km). The lunar lithosphere can be further divided into four layers, namely the lunar crust (0 60 km), the upper mantle (60 300 km), the middle mantle (300 800 km) and the lunar seismic zone (800 1000 km). The asthenosphere is also known as the lower mantle.

At depths of 10 km, 25 km and 60 km of the lunar crust, there are sharp changes in the velocity of lunar seismic waves, indicating significant discontinuities at these depths. The surface of the moon to a depth of 25 km is the first layer of the lunar crust composed of basalt, and the second layer of the lunar crust between 25 km and 60 km, composed of gabbro and pyrorite. The upper mantle is composed of magnesium-rich olivine, and the middle and lower mantle are composed of mafic rocks.

The location of the lunar hypocenter is located between the depths of 600 1000 km, and the average lunar source depth is 800 km. Since the density of the rocks on the surface of the Moon is not much less than the average density of the entire Moon, it can be assumed that the core of the Moon will not be composed of heavier elements such as iron and nickel, and it may be plastic or partially molten. At a depth of 1,000 km on the Moon, the temperature of the lunar mantle will not be higher than 1,000 ° C.

Based on what is known about the inner state of the Moon, the solid partial sphere structure is not unique to the Earth itself. The above-mentioned sphere structure of the Moon is also the result of the differentiation of the entire lunar material sphere during the evolution of the Moon.

The inner layered structure of the Moon:

1. Lunar crust: The outer layer of the moon has an uneven thickness, about 50 kilometers on the front and 75 kilometers on the back, with an average of about 65 kilometers.

2. Moon mantle: located between the lunar crust and the lunar core, it is composed of silicate. It can be divided into the upper mantle and the lower mantle, the upper mantle is about 185 kilometers thick, which is the source area of basalt magma, and the lower mantle is about 1388 kilometers thick, which may be the original material of peridotite-rich pyroxene.

3. The lunar core, the central region of the Moon, with a radius of about 350 kilometers, may be in a semi-molten state. The lunar seismic belt is about 1,000 km below the lunar surface, and the middle and upper part of the lunar crust and mantle are rigid and about 1,000 km thick.

Hierarchical structure:

From the propagation of lunar seismic waves, it is known that the moon also has a layered structure such as crust, mantle, and nucleus. The average thickness of the outermost lunar crust is about 60 km. Below the lunar crust to a depth of 1,000 km is the lunar mantle, which occupies most of the moon's volume.

Underneath the mantle is the lunar core, which has a temperature of about 1000 to 1500, so it is likely that it is in a molten state, and it is probably composed of fe-ni-s and dolerite material. The distance from the Moon to the Earth is about 1 400 of the distance from the Earth to the Sun, so the Moon is as large as the Sun when viewed from the Earth.

The internal structure of the Moon is divided into: the crust, mantle, and core. The lunar crust is the outermost layer of the lunar layer, and the mantle is 1,000 kilometers below the lunar crust, which accounts for more than half of the volume of the moon, and the most central part of the moon is the lunar core.

In ancient times, the moon was also known as Taiyin wanton deficiency, Xuantu, split Chanjuan, jade plate, is a spherical celestial body revolving around the earth, and is also a natural satellite of the earth.

The Moon is the fifth largest moon in the solar system, with an average radius of about a kilometer, which is equivalent to a multiple of the Earth's radius.

The moon is the brightest celestial body in the sky after the sun, and has had a significant impact on human myths and legends, calendar compilation, customs and traditions since ancient times.

The internal structure of the Moon is divided into: the crust, mantle, and core. The lunar crust is the outermost layer of the lunar layer, and the lunar mantle is located below the lunar crust to 1000 kilometers, and the part of the lunar mantle accounts for more than half of the volume of the moon, and the most central part or chain of the moon is the lunar core.

In ancient times, the moon was also known as Taiyin, Xuantu, Chanjuan, and Jade Disk, which is a spherical celestial body revolving around the earth, and it is also a natural satellite of the earth.

The Moon is the fifth-largest moon in the solar system, with an average radius of about one kilometer, which is twice the radius of the Earth.

The moon is the most beautiful celestial body in the sky besides the sun, and has had a significant impact on human myths and legends, calendar compilation, customs and traditions since ancient times.

The Moon is the most thoroughly studied celestial body. The second celestial body that humans have ever visited is the Moon. The age of the Moon is about 4.6 billion years.

The lunar clade has a layered structure such as a shell, mantle, and nucleus like the Earth. The average thickness of the outermost lunar crust is about 60-65 km. Below the lunar crust to a depth of 1,000 km is the lunar mantle, which occupies most of the volume of the lunar buried sphere.

Underneath the mantle is the lunar core, which is about 1000 degrees warm and most likely molten. The diameter of the moon is about one kilometer, about 1 4 of the earth, 1 400 of the sun, and the distance from the moon to the earth is quite 1 400 of the distance from the earth to the sun, so the moon is as large as the sun from the earth. The volume of the Moon is about 1 49 of the Earth, and the mass is about 735 billion tons, which is almost equivalent to about 1 81 of the mass of the Earth, and the gravity of the surface of the Moon is about 1 6 of the Earth's gravity.

That's what I know, thank you for your recognition. )

On the moon there are mainly as:

1. Crater, the name crater was given by Galileo. It is a distinctive feature of the lunar surface, covering almost the entire lunar surface. The largest crater is the Bailey crater near Antarctica, with a diameter of 295 kilometers, which is slightly larger than Hainan Island.

A small crater may even be a pothole of a few tens of centimeters. There are about 33,000 of them with a diameter of not less than 1,000 meters. It occupies 7%-10% of the surface area of the moon.

2. Moon Sea, there are 22 moon seas that have been identified, in addition to some terrain called"Moon Sea"or"Moon-like sea"Target. The vast majority of the recognized 22 are located on the front side of the moon. There are 3 on the back, 4 in the marginal area.

3. The lunar land and mountains, the area above the lunar sea is called the lunar land, which is generally 2-3 kilometers higher than the lunar sea level, and it seems to be relatively bright because of its high albetry. On the front side of the Moon, the area of the lunar land is roughly equal to that of the lunar sea, but on the far side of the moon, the area of the lunar land is much larger than that of the lunar sea.

4. Radiant pattern on the lunar surface, there is also a major feature on the lunar surface is some comparison"Young"The craters often come with a beautiful one"Radiant streaks", which is a bright band that extends in all directions with a crater as a radiant point, which passes through the mountain system, the moon sea and the crater in an almost straight direction. The length of the radial streak and the ridge of the bright envy varies, the most striking is the radiant streak of Tycho Crater, the longest of which is 1,800 kilometers long, and is especially spectacular during the full moon.

5. Moon Valley, there is also this kind of foundation on the lunar surface--- those large black cracks that seem to be crooked are the Moon Valley, some of them stretch for hundreds to thousands of kilometers, and the width varies from thousands of meters to tens of kilometers.

6. Volcanoes, lunar volcanoes can be described as old dragon clocks. Most lunar volcanoes are between 3 billion and 4 billion years old; Typical shady plains, 3.5 billion years old; The youngest lunar volcano is also 100 million years old.