Why is the center of the earth hot? Detailed answer

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Why is the center of the earth hot? Detailed answer

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Why is the center of the earth hot?

The earth consists of three main layers - the crust, mantle and core. The top layer is the bark. It is composed of hard rocks, and under the continents its thickness reaches from 30 to 50 kilometers. The next layer, the mantle, goes 2900 kilometers deep. It also consists of hard rocks. The central part of the Earth is the core, which reaches 3380 kilometers in radius. Due to the fact that the temperature of the core is very high, the substance in it is in a liquid state.

Some scientists have suggested that there is an inner core of solid metal that reaches 2575 kilometers in diameter. There is a theory about the origin of the Earth, which says that it was formed from a swirling cloud of gas and dust. Gases in large quantities were in space. Dust began to gather together under the influence of gravitational forces - this is how the solid Earth appeared.

Radioactive elements got into this earthly firmament. A radioactive element is constantly decaying, releasing heat in the process. The heat received as a result of radioactive decay constantly increased the temperature of the Earth. Eventually the matter inside the Earth began to melt. The molten substances came to the surface of the Earth, cooled in the surrounding air, and solidified. This is how the earth's crust began to form. Approximately 3 years ago, the crust was completely formed. But under it, the substance of the Earth remained very hot.

Author: Likum A.

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