The earth is a rocky planet, and it can be considered as a solid sphere as a whole. According to this understanding, the earth can theoretically be dug through. But about 71% of the earth’s surface is ocean. No matter how we dig it, it is possible to dig into the ocean at the other end of the hole. So the problem comes. If the earth is dug through, will the sea flow into the earth?
Before implementing the “Crossing the Earth Plan,” we had to explore the issues faced by this ambitious plan. The first thing to face is the high temperature. Simply speaking, the deeper the digging, the higher the temperature. The data is roughly as follows.
Upper mantle: greater than 1000 degrees Celsius
Lower mantle: greater than 3000 degrees Celsius
Earth core: greater than 5500 degrees Celsius
The above is more conservative data, the actual temperature may be much higher. In particular, the temperature of the core of the earth is comparable to the temperature of the surface of the sun. It is really difficult to find materials that can withstand such high temperatures. In fact, humans cannot find such materials at all.
But don’t be busy with headaches, because there is another problem waiting for us. This is the pressure inside the earth. Due to the effect of gravity, the deeper we dig, the greater the pressure. In general, the materials in the earth’s crust exhibit a stable solid form because of the low pressure and low temperature.
But when it comes to the mantle, it is different. Although the density of matter in the deep earth is higher, they will become very malleable under great pressure and even move slowly. You can refer to the common candle for this. Although the wax is solid at room temperature, if we squeeze it hard, it will exhibit liquid-like fluidity.
This means that it is impossible to dig holes inside the earth by conventional methods. Even if you dig a hole, the hole will soon be filled with the surrounding matter.
In addition, because the hole you dug provides a space for the release of pressure inside the earth, the material inside the earth will emerge from this hole! Even if this hole is dug at the bottom of the sea, the water pressure in the ocean usually does not correspond to the pressure inside the earth. The submarine volcano is a typical example.
Ok, maybe you will say, don’t use me so much useless. Since I dare to think so, I definitely have a way to solve the problem of high temperature and high pressure. For example, I have a stick of 13,000 kilometers (considering the earth With a diameter of 12,756 km), it is extremely hard and can withstand temperatures above 6000 degrees Celsius.
Then I was so powerful, I used a force to poke, the earth was pierced by me, and that one was a sea. Now I ask you, when I pull this stick out, what will happen to the sea on the earth? ?
Assuming that such a thing really happened, then when your stick is pulled out, the seawater will actually flow into the earth, but at most it will reach the mantle layer. Here, the seawater will be evaporated by high temperature and will take away a lot of heat. At the same time, the material near the hole will rush out and gradually cool, and finally become a hard solid, so the “hole” will be blocked. Living.
The deeper “holes” will be quickly filled with material inside the earth. However, things are not over. Because of this poke, the pressure balance inside the earth is broken, and the movement of matter inside the earth will become more active. For the surface of the earth, it is a large-scale earthquake, volcanic eruption… …
In summary, we are still less likely to do things like “cutting through the earth”