Why is the center of the earth hot magma?

There are three main reasons why magma retains heat in the Earth's interior. The first is the universe is large**.

When the Earth was formed, the heat accreted by the Earth had not yet been completely dissipated, the second was that the magma inside the Earth had been rubbing and heating, and the third was the radioactive elements in the Earth's interior.

Decay all the time to generate heat.

About 4.5 billion years ago, the Earth was not short of heat when it first formed, even from the core.

The earth's crust is in a state of thermal melting, but during the cooling of the earth, the heat of the inner core cannot be dissipated in time, which leads to the continuous high temperature of the earth's interior. Moreover, the crustal layer and mantle of the Plum sphere plate.

The layers act as a "quilt" to keep the heat inside, even as the magma pushes the plates.

Some heat is indeed lost, but these are negligible and can be replenished in a short period of time. Because when the tectonic plates move, in addition to the shaking of the earth's crustal surface and volcanic eruptions.

In addition to the uplift of the mountain range, there is also a part of the earth's crust that inserts into the ground, forming squeezing friction with the magma to replenish the lost heat.

Plus the most important radioactive material on Earth.

Uranium-235, uranium-238, thorium-232, potassium-40, etc. are all lithophilic, and when they react with oxygen, they will continuously release heat into the mantle, and then supplement the heat of the earth's core through the mantle, as long as the radioactive elements do not disappear, the heat inside the earth will always be maintained.

Of course, there are also scientists who believe that the Earth's heat is slowly being lost through the atmosphere.

Escape into outer space.

Although the heat leaves the earth for a long time, the time goes by and the core of the earth does cool down. When the earth's core is completely cooled, the earth may become like Mars, the atmosphere is very thin, and there will be no more volcanic eruptions and **, at that time life on the earth will cease to exist, but this time is at least billions of years later, with the current damage to the earth's ecology by humans, whether human beings can continue to exist for billions of years, is still unknown. If you want to know what will happen in the future, it is estimated that you will have to continue to find data for research.

1. Raw heat. The birth process of our earth is about 4.6 billion years ago, and its birth process can be seen as the result of the gradual collision and fusion of a large number of primitive materials, in which the kinetic energy of the primitive matter is converted into heat energy through collision and fusion with the earth, and stored in the primitive earth. With the passage of time, the earth's orbit is attached to the air so that the nearby matter is less and less adsorbed, the original molten state of the earth is gradually cooled and sliding, and the heavier elements also gradually sink into the earth's interior, as the earth's crust cools and solidifies, a huge insulation layer is formed, it is the thermal insulation of the earth's lithosphere, so that the heat dissipation rate of the earth's interior is very slow.

2. Decay and heat production of radioactive elements. If there is only an insulation layer, theoretically the heat inside the earth will gradually decrease over time, but today, billions of years later, the temperature inside the earth is still as high as thousands of degrees Celsius, because the earth itself has radioactive elements decay to generate heat. These radioactive elements mainly include uranium-238, potassium-40 and other elements.

Scientists estimate that more than half of the heat in the Earth's interior comes from the decay of radioactive elements.

The rock formations deep in the earth are in a high-pressure environment, so as the depth increases. The greater the pressure of the rock formation, the higher the temperature will be, so the rock formation will exist in liquid form at the deep crack of the earth, and will not be cold.

The magma in the earth has always maintained high heat sensitivity and is not cold and closed, mainly because the earth contains a large number of radioactive elements, which release a large amount of heat in the process of decay to keep the magma hot.

The Earth's core is not all magma, the Earth's core is a solid core composed mainly of radioactive elements. Since humans cannot penetrate deep into the Earth's interior, they can only guess the Earth's internal shape based on the Earth's magnetic field and other characteristics. The core of the Earth is divided into an inner core, which is a solid state composed of radioactive elements, and an outer core, which is mainly composed of a liquid metal stream composed of metals such as iron and nickel.

The interior of the earth is like a huge thermostatic barrel, the radioactive elements in the inner core are constantly releasing radiation to heat the surrounding materials, and it is difficult for these temperatures to escape to the outside, so the temperature of the earth's core is constantly rising, melting the metal, forming a liquid metal flow in the outer core.

1. The high temperature of the earth's center is the key factor in the generation of magnetic field

According to current models of the Earth, the melting of liquid metal in the outer core of the Earth is a key factor in the generation of the Earth's magnetic field.

Since the liquid metal flow is mainly composed of metal elements, the entire outer core is in a conductive state, and the radiation emitted by the radioactive elements in the inner core activates electrons, forming an electric current on the metal flow, which in turn causes the earth to have a magnetic field.

The planetary composition of Mars and Earth is basically the same, the only difference is that the Martian inner core may be in a cool state, so it cannot generate enough magnetic field to protect Mars, and the Martian atmosphere is basically completely stripped away from the erosion of the solar wind for a long time.

2. The center of the earth cannot completely maintain high temperatures:

The heat of the earth's center is higher than that of radioactive elements, and radioactive elements have their decay period, and these elements will gradually decay into other elements after a long time, and eventually lose their radioactivity.

With the decay of radioactive elements in the center of the earth, the temperature of the earth's core will gradually decrease, the heat will gradually be lost, and the earth's magnetic field will begin to weaken. As the temperature decreases further, the metal begins to solidify, the volume of the core of the earth increases, the flow of liquid metal in the outer core decreases, and eventually the entire core becomes solid.

Without the flow of conductive metals, the Earth will also lose its magnetic field, when the solar wind will directly affect the Earth, and it is expected that after 100 years of losing the magnetic field, the Earth's atmosphere will be stripped away.

The reason why the earth is suitable for life is a miracle formed by the fusion of countless coincidences.

The right size of the Earth, the presence of liquid water, the presence of an atmosphere, and the presence of magnetic fields are all indispensable for life, but these miracles are not always stable. Over time, the Earth's inner core may cool, the sun may die, galaxies can collide, asteroids may hit the Earth, these are all disasters that will occur in the future, in order for human beings to continue to thrive in the universe, human beings must explore the universe, find other life, find another home!

I don't think it's magma, it's our core, which is made up mainly of radioactive elements, which is why the temperature is so high.

There is not only magma in the center of the earth, but also a lot of iron and minerals, as well as various unknown components. Because the terrain is constantly moving, it has such a high temperature.

Not all. There are also some high-temperature and high-pressure substances pressed here, because the more you go inside, the more you rely on yourself to develop the most intense movement.

Because there is also a large enough energy in the interior of the earth to cause ** disasters. And the heavier the core.

The higher the pressure, the higher the temperature, so the temperature of the Earth's core is the maximum.

We know that some data can be crossed over solid chemicals, but not in a liquid state. Because this wave can go over the mantle.

Unable to cross the core, geographers have suggested that soil temperature continues to rise with depth1 and that the mantle is still solid, although it is likely to loosen slightly. Iron cores are liquid. This is not surprising.

Under normal conditions, rock melts around 2000 and iron gradually melts at 1500. Obviously, a temperature that does not melt the rock is enough to melt the iron core. As everyone knows, it just doesn't tell us how hot it is at the core-mantle boundary.

The melting point of rock and iron increases with pressure, and the pressure also slowly rises with depth1 (when deep rocks erupt with volcanoes).

When it is raised, the melting point decreases as the pressure decreases. Active volcano.

The liquid rock that erupts is called "lava").

The deeper you go to the core, the pressure will continue to increase, and the melting point of iron will continue to increase. In fact, the melting point of iron seems to rise faster than the temperature. In that way, within 75 kilometers of the Earth's most core, the iron core becomes a solid "core".

The pressure has made the melting point of iron so high that the rising temperature cannot melt the core. If we understand how the melting point of rock and iron rises with pressure, we can grasp the exact temperature at which iron can be melted but not rock at the boundary between the mantle and the core. You will also know the temperature at the boundary between the outer core and the core, as it is the melting point of iron under this pressure standard.

The melting point of rock and iron can only be measured at a pressure far below the deepest part of the earth, so it is difficult to reach the deepest temperature.

In early 1987, biologists invented a new technology that could generate very high temperatures and pressures in a short period of time and carry out accurate measurements. It can be used to accurately measure the melting point at a pressure 10 to 12 times higher than previously measured. The results of this technical measurement show that the melting point of iron is 4500 at the pressure standard between the mantle and the outer core; And between the outer core and core, the iron does not gradually melt until 7300.

Naturally, experts do not believe that the earth's core is composed entirely of iron, and should be combined with other elements, especially sulfur. They reduce the melting point of the Earth's core by 1000. Thus, experts may have a temperature of 3500 at the outer boundary of the Earth's core, 6300 at the outer boundary of the core, and 6600 at the Earth's positive core.

It is generally formed by marine organisms or geological structures, and then is quietly trembling by the ground and the earth, because the terrain limb is the heat source, so the temperature is relatively high.

This is due to the fact that the underground is close to the center of the earth, the temperature is very high, and if the rock melts, magma will be formed quickly, because the temperature of the earth's core is very high, so the closer to the orange the temperature of the center of the earth, the higher the temperature.

The temperature of the mantle is very high, and the dry crust contains a lot of material, which can melt a lot of rocks. A change in pressure can cause a magma eruption. There is a huge energy source inside the earth, which will release a large amount of heat pure brother. So the temperature will get higher and higher.

Because there is a lot of magma in the ground, these magma have been gathering underground all year round, and only the movement is happening on the side, so there is a lot of heat, and the temperature of the center of the earth will be higher.

It is because the temperature of the inner group of the earth is particularly high, and the interior of the earth has been moving violently, squeezing the internal material into a magma-like shape, and the temperature inside the earth is not well emanated.

Human beings have to find a way for themselves, because the earth is a starting point for human beings to go farther after all, because the previous generations of life on the earth have proved that the earth will not allow a creature to exist forever, and it must be changed, so we have only just entered space for decades and continue to explore which planet can be a suitable and habitable planet for human beingsBecause life on Earth seems to be unable to escape the end of destruction in the end, because 5 generations of life have proven it before.

This is because the earth used to be a magma sphere, but after billions of years of changes, its surface slowly cooled, forming the home we live in today, and its internal magma still exists and has not cooled, so the internal environment of the earth is magma.

Because the earth evolved through the cosmic explosion, at first it was magma that slowly absorbed matter, forming the earth and various planets, so the internal environment of the earth is all magma.

Because the earth was a fireball in the beginning, not only was it magma inside, but it was also magma outside, and after many years, the earth's surface cooled down before it was suitable for human habitation.

The temperature in the center of the earth can be as high as 6000 degrees;This is due to the fact that there is a lot of hot material under the earth's crust, and once there are some cracks in the earth's crust, the magma will erupt outward along the cracks, thus forming volcanoes and magma.

The temperature inside the Earth's core is above 6,000 degrees. This is due to the high temperature of the terrain, combined with the movement of tectonic plates, which leads to the emergence of volcanoes, which also leads to the eruption of volcanoes, which leads to the appearance of these magmas.

At 6,600 degrees, the temperature is very high, and because the temperature inside the ground is very high, there are these magma and volcanoes.