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The reason is simple, because there is an atmosphere.
The heat on the earth mainly comes from the thermal radiation of the sun, and the earth receives solar radiation all the time and also emits heat into space.
The heat received by the Earth is mainly in the form of visible light, which has a shorter wavelength, which passes through the atmosphere, while the heat emitted by the Earth into the universe is mainly in the form of infrared rays with longer wavelengths, which are partially absorbed by the atmosphere.
The density of the atmosphere is not uniform, but decreases with increasing altitude. That is, the density of the lower atmosphere is much greater than that of the upper atmosphere.
While everyone receives the same amount of solar radiant heat, the heat emitted at lower altitudes is absorbed by the higher density of the lower atmosphere, while at higher altitudes, such as high mountains, the heat emitted into space is not too blocked due to the low density of the atmosphere. This is the root cause of low temperatures at high altitudes.
I explained so much that I don't know if you understand it, if there is anything you don't understand, just ask me, I'm glad to help you.
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Because the air temperature decreases with altitude (about 6 per 1000 m of elevation) Reason: The ground is the main direct heat source for the tropospheric atmosphere, and the closer you get to the ground, the more heat it gets.
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The summit has a high altitude and low temperatures. The precipitation is concentrated on the top of the mountain, and when it is cold into ice and snow, it will be cold.
The cold air is going to fall, but it's not so exaggerated, personal opinion
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Vertical rate of decline in air temperature.
Rise 1000 meters and drop 6 degrees Celsius.
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On the surface of the earth, the ground is a direct source of heat for the atmosphere, so the farther away from the ground, the cooler the temperature! The temperature on the mountain is lower than at the bottom of the mountain.
You are right when you say that "generally cold air is going downward" Yes, it is just a downward trend, but it is still on top of the mountains; When it reaches a certain height, on the one hand, due to the increase of the terrain, the temperature will drop, and on the other hand, the temperature will also drop when it encounters cold air from above, and the temperature will also drop when the temperature drops, and when it is cold, it will form a terrestrial rain ......Hope you can see it.
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They're all done, and I don't have a share.
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The earth's surface is surrounded by the vast atmosphere and oceans, and the heat of atmospheric temperature changes mainly comes from two aspects: one is to directly obtain a part of the heat from solar radiation, which increases the atmospheric temperature; Second, solar radiation penetrates the atmosphere, and the soil, vegetation, rivers and lakes on the earth's surface absorb more solar heat, and the surface temperature rises rapidly. Due to the temperature difference between the surface and the near-surface atmosphere, the ground is constantly releasing heat to heat the atmosphere.
In layman's terms: the sun first heats the ground, and then the ground releases heat to warm the air temperature. Because the mass distribution of the atmosphere is mainly concentrated in the lower layers, the higher you go, the thinner the air becomes.
Therefore, the atmosphere near the ground gets more heat from the ground, and the atmosphere away from the ground gets less heat, and on average, the temperature decreases by 100 meters per 100 meters, so the top of the mountain is colder than the bottom. Some peaks of the Qilian Mountains, Tianshan Mountains, Kunlun Mountains, and Himalayas in China are covered with ice and snow all year round. On the equator, some of the highest peaks are covered with snow all year round.
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It is a folded mountain, an eroded landform, similar to the Loess Plateau in China, adjacent to the desert.
There is too little information in this map, so it is recommended that you fill in the Loess Plateau as a reference
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Erosion Hill Isn't it? According to the cause, it can be divided into tectonic mountains, erosion mountains and accumulation mountains.
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Tectonic Mountains, Erosion Mountains, and Accumulation Mountains.
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I guessed it was Kunlun Mountain.
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It feels like a sand dune or something, is it a mountain... Could it be the Altai Mountains in the northwest or something.
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It's a familiar landscape.
But I forgot.,The landlord knows to tell me!! 3q
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This mountain is really made of man-made piles, and it's a bit weird!
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China National Geographic (2006, No. 3) once described the significance of the Qilian Mountains to China: "The Qilian Mountains in the east, blown by the Pacific monsoon, are a wet island jutting into the arid region of the northwest. Without the Qilian Mountains, the desert of Inner Mongolia would be connected with the desert of the Qaidam Basin, and the desert might have advanced greatly in the direction of Lanzhou.
It is precisely because of the Qilian Mountains, the glaciers in the extremely high mountains and the rainfall in the mountains that the rivers have developed, the Hexi Corridor has been nurtured, and the Silk Road has been established. However, the significance of Qilian Mountain does not stop there. ”
The greatest contribution of the Qilian Mountains to China is not only the Hexi Corridor, not only the Silk Road, not only the introduction of religion and the sending of jade, but more importantly, the Qilian Mountains have created and nurtured glaciers, rivers and oases as stepping stones and bridges, allowing China's politics and culture to cross the desert of the northwest tide of China, shake hands with the Tianshan Mountains in Xinjiang, and the Chinese have walked to the Tianshan Mountains and the Pamir Plateau under the protection of the Qilian Mountains. It is said that the name of Zhangye is taken from the meaning of 'breaking the arm of the Xiongnu, Zhang Zhongguo's armpit', and the Hexi Corridor is the arm of China, which dragged back a Xinjiang for China. ”
Geographical significance of Qilian Mountain:
1. The dividing line between the Inner Mongolia Plateau and the Qinghai-Tibet Plateau;
2. the dividing line between the first and second steps;
the annual isoprecipitation line of mm;
4. The dividing line between the internal and external flow areas;
5. The dividing line between arid and semi-arid areas;
6. The dividing line between grassland landscape and desert landscape;
7. The boundary between the Qinghai-Tibet region and the arid and semi-arid regions of Northwest China.
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The greatest geographical significance of Qilian Mountain is that it dragged back a Xinjiang for China, if there was no Qilian Mountain, then there would be no Hexi Corridor, then our various cultural exchanges in China would not come to Xinjiang, Qilian Mountain brought China a beautiful Xinjiang. It is precisely because of the existence of Qilian Mountain, there will be the Hexi Corridor, there are many glaciers on the Qilian Mountain, it is the meltwater of the Qilian Mountain glacier that nourishes the Hexi Corridor, otherwise it will only be the arid Gobi, the Hexi Corridor connects the east and the west, the Hexi Corridor is famous, but it is the contribution of the Qilian Mountain, so that many cities have developed in the Hexi Corridor, which is the greatest geographical significance of the Qilian Mountain.
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Kunlun Mountains - Qilian Mountains - Hengduan Mountains.
It is the dividing line between the first and second tiers.
It is the dividing line between the Qinghai-Tibet region and the other three regions.
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It is the dividing line between the first and second tiers.
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That's right, the east rises and the west sets have nothing to do with the direct point of the sun, but the rotation of the earth, and the earth rotates from west to east, so it will rise in the east and set in the west. The direct sun point moves back and forth, moving back and forth between the Tropic of Cancer, no matter how automatically the direct sun point does not exceed the Tropic of Cancer, that is, the fixed north-south latitude. When the direct point of the sun moves to the southern hemisphere, the northern hemisphere is winter, which is equivalent to the sun's rays from the south to the north, so our south is the sunny slope.
Even if the direct point of the sun moves to the Tropic of Cancer and the sun shines on a country like ours at high latitudes, the sunlight still shines from south to north, and the south is still the sunny slope. I don't know if you can understand what I said, and if you don't understand, you can ask me.
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The first is the Qinling Huai River, which is the dividing line between the north and the south.
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Today I learned that China's Qinghai-Tibet Plateau is also formed by the squeeze of the Indian Ocean plate and the Eurasian plate! ~
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The origin of mountains is the geological structure in geographical terms, which is divided into folds and faults. The Himalayas are folded mountain ranges, while Mount Hua and Mount Lushan are caused by faults.
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The Himalayas were formed by the collision of the Eurasian plate and the Indian Ocean plate, and both Lushan and Taishan are bulwarks.
The Alps abroad are formed by folds.
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"The Geography of the Country.
Chronicles", "Circumnavigation of the Globe".
Geography junior high school and high school textbooks.
China State.
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Capitals of various countries, such as Tel Aviv, the capital of Israel, Tehran, the capital of Iran, Cairo, the capital of Egypt, etc.
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Changbai Mountain is a dormant volcano.
What to wear from Hainan to the Northeast in winter, and what about this geographical issue.
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