The core of the earth is located in the innermost part of the earth, with extremely high temperatures, and has been so since the birth of the earth. Moreover, this fiery core is the reason why we can survive on this planet! It may sound strange, but it does – the core is vital to our survival. Although the development of science and technology has been able to capture the image of black holes, it is not easy to uncover the mystery of our own planet. However, through the analysis of rocks brought about by volcanic eruptions and the study of seismic waves (waves generated by earthquakes, volcanic eruptions or other disturbances in the earth’s interior), scientists have a considerable understanding of the internal structure of the earth. The earth is not a uniform solid, but is divided into many layers. The earth was formed about 4.6 billion years ago when the solar system was born. Initially, it was just a gas planet, but as the gas interacted, different densities of matter began to separate, and the earth gradually became what it is today – a huge rock planet with an onion like interior. The outermost layer of the earth is the crust. This is the place where we live, where we build houses, plant trees and do all kinds of production activities. Compared with other layers, the crust is very thin. The average thickness of the oceanic crust is about 8 km, mainly composed of basalt and continental crust; the average thickness of continental crust is about 32 km, mainly composed of granite. The next layer of the crust is called the mantle. The thickness of this layer is about 2900 km. The upper mantle is hard and brittle, while the lower mantle flows like semi molten rock. The upper layer of the mantle is combined with the crust and is called the lithosphere, while the semi molten layer is called asthenosphere, and the lithosphere slides over the asthenosphere. The core is divided into two parts, the outer core and the inner core. The outer core is mainly composed of iron and nickel, which is completely liquid. Its temperature is very high, about 4400 degrees Celsius on the outside, increasing inward, reaching about 6100 degrees Celsius near the core. The outer nucleus is about 2300 kilometers thick. Through the outer core, we reach the hottest part of the earth, the inner core. The temperature of the core is unimaginably high, ranging from 5000 to 7200 degrees Celsius. The most surprising thing is that even at such high temperatures, the core is still completely solid, about 1200 kilometers thick. < / P > < p > for humans living on the earth’s crust, it is difficult to imagine that the temperature of the earth’s core would be higher than that of the sun’s surface. The real question is, how did the earth generate so much heat 4.6 billion years ago? According to research, there are two main reasons why the core is so hot. < / P > < p > first of all, this is due to the accretion process during the formation of the earth. When the solar system was formed, the earth began to move around the sun. Under the strong gravity, some meteorites and other objects gathered together to form giant planets. Every time this accretion occurs, a huge amount of heat is generated. < p > < p > after the formation of planets, the matter begins to be divided into different layers according to the density. The densest material is deposited in the core, which also generates a lot of heat. To this day, the original heat of the earth still exists in the core, because the earth couldn’t disperse it quickly when it was formed, and now it has stabilized. Heat dissipates only through the crust, but because plate tectonics act like blankets and the mantle is not a particularly good heat transporter, it stays in the core for a long time. The second main reason for the high temperature of the core is the decay of radioactive elements such as uranium. Radioactive decay leads to the formation of sub isotopes, which is an exothermic process. There is a slight difference between the heat from radioactive decay and the original heat. Some studies suggest that the original heat is mainly concentrated in the core, while the heat released by radioactive decay is distributed in other layers of the earth. However, through the analysis of iron meteorites from the cores of other planets and the study of geophysical and chemical properties, it can be inferred that the core is also composed of iron and nickel. Although the temperature of the core is comparable to that of the sun, it is essential to maintain life on earth. The outer core is liquid, so it flows all the time. The convection generated by this movement is the cause of the formation of the earth’s magnetic field. This magnetic field, in turn, protects life on earth from solar flares and maintains a habitable atmosphere. On the other hand, the core helps to stabilize the magnetic field. The convection of the outer core and the heat generated by the outer core can make the structure above it move, especially the mantle. This movement contributes to plate movement, resulting in continental movement and the creation of new land blocks. < / P > < p > the earth’s core is vital not only to human beings, but also to all living things, including animals and plants. If the core’s temperature drops, affecting its solid or liquid state, life may not survive or thrive. This is the important balance of the earth’s core. (Rentian) < A= target=_ blank>It is said that “gta5” will be launched on Google cloud game platform stadia