If the Earth's core gradually cools, what will be the fate of the planet?

In recent years, there have been reports of major earthquakes from time to time around the world, and many people have lost their homes and even their precious lives as a result. One of the reasons for earthquakes is that the core of the earth is flowing molten metal, and some of this heat is released into the atmosphere in the form of earthquakes or volcanic eruptions. Some people say that if the core of the earth cools down, there will be no more disasters like earthquakes and volcanoes in our world. Is this really true?

First of all, if the time is long enough, the core of the earth may cool down, because the radioactive elements in the core of the earth are not infinite. When the nuclear reaction in the core gradually stops, the core of the earth will cool down and gradually become similar to It looks like Mercury or Mars today. However, if the core cools, there may not be as many volcanoes and earthquakes on Earth, but all life on Earth will be wiped out.

Because, once the flowing core is lost, our magnetic field will also slowly disappear. In the current mainstream view, the temperature and density of various regions inside the earth have relatively large differences, resulting in the continuous flow of various substances in the earth's interior, and the process of this flow is charged movement. We just need to follow the right-hand spiral rule in high school textbooks to figure out that the movement of these charges will create a magnetic field, our Earth's magnetic field.

The magnetic field is particularly valuable for life on earth. All creatures on the earth have become accustomed to the existence of the magnetic field, and the behavior of many animals, including humans, depends on the magnetic field. The weakening or disappearance of the magnetic field will affect the stability of life. cause some interference.

What's more, the magnetic field has always protected us from cosmic rays and the solar wind. As we all know, the magnetic field of Mars is extremely weak, and the atmosphere is also very thin. This is because the supersonic plasma charged particle flow will be emitted when the nuclear reaction is carried out inside the sun, commonly known as the solar wind. The solar wind will blow away the atmosphere of the planet. The planet will be directly exposed to various cosmic rays, making it difficult to maintain stable life.

We can say that when the Earth's core cools, it is when the Earth's magnetic field disappears, and it is also when the Earth's atmosphere and life come to an end. So, when will the Earth's core cool down? Our earth has existed for 4.6 billion years, and most of the radioactive elements in the core region have passed their half-life. In fact, the earth has been dissipating heat into the universe in the form of thermal radiation. As the core produces less and less heat , the core of the earth will inevitably cool down gradually and can no longer function as the engine of the earth.

Just imagine, without the protection of the magnetic field, the earth's atmosphere is impacted by high-energy particles all the time, the atmosphere is stripped away bit by bit, the water on the earth slowly escapes into space, and the earth becomes a barren land , like Mars is now. When the Sun becomes a red giant, the Earth will most likely lose its outer shell and retain only most of its inner core, as Mercury does today. In any case, the earth at that time was no longer suitable for life, and the fate of mankind was unpredictable.