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The geosphere is divided into two parts: the outer and inner spheres of the earth. The Earth's outer sphere can be further divided into four fundamental layers, namely the atmosphere, hydrosphere, biosphere, and lithosphere; The Earth's inner sphere can be further divided into three fundamental spheres, namely the mantle sphere, the outer nuclear liquid sphere, and the solid inner core. In addition, there is an asthenosphere between the outer and inner spheres of the Earth, which is a transitional layer between the outer and inner spheres of the Earth, located at an average depth of about 150 kilometers below the ground.
In this way, the entire Earth consists of a total of eight spheres, in which the lithosphere, asthenosphere and inner sphere together constitute the so-called solid Earth. The atmosphere, hydrosphere and biosphere in the Earth's outer sphere, as well as the surface of the lithosphere, are generally studied by direct observation and measurement. At present, the inner circle of the earth is mainly studied by geophysical methods, such as the inversion of high-precision modern space geodetic technology observations.
There is a significant feature in the distribution of the earth's spheres, that is, the interior of the solid earth and the upper air above the surface are basically parallel to each other, while near the earth's surface, the spheres are interpenetrating or even overlapping each other, among which the biosphere is the most significant, followed by the hydrosphere.
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The structure of the earth is like an egg, which can be divided into three layers. The central layer is the "yolk" - the core; In the middle is the "egg white" - the mantle; The outer layer is the "eggshell" - the earth's crust. **Usually occurs in the earth's crust.
The Earth is constantly rotating and revolving, and the interior of the Earth's crust is constantly changing. As a result, the force is generated, which deforms, fractures, and dislocations the crustal rock layers, and then occurs.
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There are 3 parts: the crust, the mantle, and the core.
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1. The interior of the earth is divided into three parts, and the interior of the earth can be divided into three circles: the crust, the mantle, and the core.
1) Earth's crust: It is divided into upper crust and lower crust. It is the upper subpolar layer of the lithosphere;
2) Mantle: It is divided into the upper mantle and the lower mantle. The lithosphere is part of it, and the mantle above the asthenosphere mostly exists in the form of fluid magma and other materials;
3) Earth's core: divided into outer core and inner core, the outer core is liquid, so it is also called the outer nuclear liquid sphere; The inner core is solid, mainly composed of iron and nickel, also known as the inner solid ring.
2. Classification method:
About 33 kilometers down from the ground are rocks of various rocks, which scientists call "crust".
From 33 km to 2,900 km, there may be a magmatic material in an approximate liquid state, which scientists call the "mantle".
Below 2,900 kilometers, it may be a solid substance, the core part of the Earth, which scientists call the "core".
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1. It is bounded by a longitude circle composed of 20 degrees west longitude and 160 degrees east longitude, and is divided into two hemispheres: east and west;
2. Bounded by the equator, it is divided into two hemispheres, north and south;
3. Bounded by the Tropic of Cancer and the Antarctic Circle, it is divided into tropical, temperate and cold zones;
4. From the interior of the earth, the inner core, the outer core, the lower mantle, the upper mantle, the crust, etc.
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1.Earth's crust: It is divided into upper crust and lower crust. It is the upper subpolar layer of the lithosphere;
2.Mantle: Divided into upper mantle and lower mantle. The lithosphere is part of it, above the asthenosphere. The earth's mantle is mostly in the form of fluids, such as magma.
3.Earth's core: It is divided into an outer core and a kernel. The outer nucleus is liquid, so it is also called the outer nucleus liquid sphere. The inner core is solid, mainly composed of iron and nickel, also known as the inner solid ring.
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From the surface to the center of the earth, it is divided into three parts: the crust, the mantle and the core. The earth can be divided into three layers. The central layer is the core; In the middle is the mantle; The outer layer is the earth's crust. **Usually occurs in the earth's crust. The interior of the earth's crust is constantly changing, and from this there is a force that acts.
The internal structure of the earth can divide the interior of the earth into three concentric spheres: the core, the mantle and the crust according to the changes in the propagation speed of the waves at different depths underground. The central layer is the core; In the middle is the mantle; The outer layer is the earth's crust.
The crust and mantle are bounded by the Moho plane, and the mantle and core are bounded by the Gutenberg plane.
Occurs in the earth's crust. The interior of the earth's crust is constantly changing, and the resulting force causes the crustal rock layers to deform, fracture, and displace, so that ** occurs. Super ** refers to the large ** that refers to the extremely strong shock wave.
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The Earth's inner sphere can be divided into three fundamental layers, namely the crust, mantle, and core. The top of the Earth's crust and upper mantle (above the asthenosphere) is made up of hard rocks, synthetically lithosphere. The internal structure of the earth:
The two interfaces between the three layers of the crust, mantle and core are called Moho and Gutenberg in turn.
The Earth's inner sphere can be divided into three fundamental layers, namely the crust, mantle, and core.
The earth's crust is the thinnest layer, with an average thickness of about 17 kilometers.
The mantle lies between the earth's crust and the earth's core, also known as the mesosphere. From below the crust of the trembling shed to a depth of 2,900 km.
About 5,100 km below the mantle** transverse waves cannot pass through the outer core, which is called the outer core, and 5,100-6,371 km is the inner core. The thickness of the Earth's core is more than 3,400 kilometers, which is the thickest layer of the Earth's inner sphere.
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