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The systematic scientific study of the question of the origin and evolution of the earth began in the middle of the eighteenth century, and several theories have been put forward to this day. The Earth, as a planet, is thought to have originated from the primordial solar nebula 4.6 billion years ago. Earth, like other planets, has undergone a number of common physical evolutionary processes, such as accretion and collision.
The material that formed the primitive Earth was mainly the primordial material of the nebula disk, the composition of which was mainly hydrogen and helium, which accounted for about 98% of the total mass. In addition, there is solid dust and material thrown out during the early shrinkage evolution phase of the sun. In the process of the formation of the earth, due to the differentiation of matter, light matter is constantly separated with volatile substances such as hydrogen and helium, and is carried to the outside of the solar system by the sun's light pressure and the material thrown by the sun.
Mercury, Venus, and Mars, like Earth, may have formed in a similar way due to their proximity to the Sun, and they retain more heavy matter; Outer planets such as Jupiter and Saturn, because they are far from the Sun, still retain more light matter. Although there is still a great deal of speculation about the way in which the primitive earth was formed, most researchers agree with Mr. Devinsay's conclusion that after the formation of the above-mentioned nebula disk, due to the action of gravity and the instability of gravity, the material in the nebula disk, including the dust layer, formed many protoasteroids or stars due to collision accretion, and then gradually evolved and gathered into planets, and the earth was born in it. It is estimated that the time required for the formation of the Earth is about 10 million to 100 million years, and the formation time of planets closer to the Sun (terrestrial planets) is shorter, and the farther away from the Sun, the longer the formation time, even up to hundreds of millions of years.
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The northern hemisphere is mostly land, and the southern hemisphere is dominated by oceans.
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The southernmost part is the tundra zone, further north is the permafrost zone, and further north is the ocean.
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The Arctic region has no land, only a sea covered with snow and ice.
In winter, the solid ice and snow on the ocean surface is more than 2 meters thick. The ice at the edge of the island breaks off and slides into the sea, forming tall icebergs that are often mistaken for land, hence countless legends of "melting land". Such as polar explorers.
The former names "Sannikkov Land, Peterman, Andrey's Land", etc., have since disappeared.
Climate. The climate in the Arctic is cold all year round. Arctic Ocean.
It is a vast frozen ocean, surrounded by numerous islands and North America.
and the coastal region of Bihu in northern Asia. In winter, the sun is always on the horizon.
Below, the sea is completely frozen in ice. In summer, temperatures rise above freezing, the marginal areas of the Arctic Ocean melt, and the sun hangs in the sky for weeks on end.
The Arctic Ocean is rich in fish and plankton, which provides abundant food for the millions of seabirds that nest here during the summer**, as well as for seals, whales and other marine animals. Most of the area around the Arctic Ocean is relatively flat and there are no trees growing.
In winter, the ground freezes and the ground is covered with a thick layer of snow. In summer, the snow melts, the topsoil thaws, and the plants grow and bloom.
and animals such as musk oxen provided food. At the same time, wolves and polar bears.
and other carnivores also survive by preying on other animals.
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There is land at the south pole of the earth and no land at the north pole of the earth.
1 In Antarctica, it is a large landmass, with an area of about 14 million square kilometers, known as the "seventh continent" in the world. The Arctic Ocean occupies a large area, about 13.1 million square kilometers, and the heat capacity of the water is large, which can absorb more heat and then release it slowly.
As a result, the weather in Antarctica is colder than in the Arctic. Antarctica is the coldest land in the world, with an average annual temperature of only minus 56 in the middle of the continent, and the lowest temperature has reached minus 88 3, and the coldest month (July?). The average temperature is minus 70 minus 20; The warmest month (January?)
The average temperature is also below 0. And in the Arctic, the coldest month in the Arctic (January?) The average temperature is minus 40 minus 20, and August is the warm season, and the average temperature is mostly below 8.
The climate in the central Arctic Ocean is even milder than on the edges, with the coldest regions east of central Greenland and the lower Lena River in Siberia, with a minimum temperature of minus 68 in Vilkhyansk, Russia
2 The Arctic has only the Arctic Ocean.
The Arctic Ocean, the name "Arctic" comes from the Greek word for the ocean facing the constellation Ursa Major. In 1650, the German geographer BValennius was the first to divide it into an independent ocean, called the Great Northern Ocean; In 1845 the London Geographical Society named it the Arctic Ocean.
It was changed to the Arctic Ocean because it is the northernmost of the four oceans, and because the climate in this region is severe and the ocean is covered with ice all year round, so people call it the Arctic Ocean.
Area: 14.75 million square kilometers, about 1 14 of the Pacific Ocean. It occupies about the total area of the world's oceans and is the smallest and shallowest of the four oceans on Earth.
Location: Roughly centered on the North Pole, between Asia, Europe and North America, surrounded by three continents. The Arctic Ocean spans 360° longitude, making it the widest ocean in the world.
Scope: Between Asia and North America, the Bering Strait is connected to the Pacific Ocean, between Europe and North America by the Iceland-Faroe Sea Threshold and the Wivia Thomson Ridge and the Atlantic Ocean, and between the Danish Strait and the Smith Strait in northeastern North America.
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1. China is located in the northern hemisphere of the earth, not the North Pole. The Arctic region of the earth has no land, but a thick ice sheet, surrounded by Russia, the United States, Canada, Iceland, Denmark, Finland, Norway and other countries.
2. China's land and sea location: the east of Asia, the west coast of the Pacific Ocean.
3. Location of the Chinese hemisphere: the eastern hemisphere and the northern hemisphere.
4. Latitude and longitude of China: The latitude spanning the north and south of China's territory is nearly 50 degrees, most of which are in the temperate zone, a small part in the tropics, and there is no cold zone. It's about the size of the whole of Europe.
The four ends of Chinese territory are: the easternmost point is at the intersection of the center line of the main channel of the Heilongjiang and Ussuri rivers (135°2 30''e), and the westernmost point is near the Pamirs (73°29).'"e), the southernmost point of the site is in the dark sand (3°31'00'n', 112°17'09"E), (English: Lidi Ansha or Lydi Shoal) is a dark sand in the Nansha Islands region of the South China Sea, the southernmost point of actual Chinese territory (not located about 15 nautical miles northeast of the Zengmu Shoal).
According to the administrative division of the People's Republic of China, the site of the dark sand belongs to the jurisdiction of Sansha City, Hainan Province. The northernmost point is on the center line of the main channel of the Heilongjiang River north of the Mohe River (53°33 N, 124°20 E), and China spans more than 60 degrees of longitude from east to west, and the easternmost Ussuri River and the westernmost Pamir Plateau are five time zones apart. [6-7]
5. China has a vast territory, with a total land area of about 9.6 million square kilometers, second only to Russia and Canada, ranking third in the world, and the fourth is the United States. China is 5,500 kilometers from north to south and 5,200 kilometers from east to west.
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There is land in Antarctica called Antarctica.
The Arctic is the Arctic Ocean and has no landmass.
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In 1926, Amundsen flew the Arctic basin for the first time in an airship, making him the first person to reach the North and South Poles. Since then, humans have reached the North Pole many times and seen many of its secrets.
The Arctic region has no land, only a sea covered with snow and ice. In winter, the solid ice and snow on the ocean surface are more than 2 meters thick. The ice at the edge of the island breaks off and slides into the sea, forming tall icebergs that are often mistaken for land, hence countless legends of "melting land".
For example, the polar explorers once named "Sannikkov Land, Petermandi, Andrei Land", etc., which later disappeared. Some say it's a mirage, but later research confirms that it's "melting land." It is made up of buried ice, which is a small island disguised as a small island by the stranding of large ice blocks and the gradual accumulation of mineral soil brought by the wind from the south.
Sometimes, it can also be used as a wonderful observation site, taking off and landing aircraft. But as the temperature warms, they melt from the bottom and disappear.
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The four endpoints of China's territory are the most extreme points in the four directions of east, west, north and south. Among them, the northernmost point is the center line of the main channel of the Heilongjiang River at the northern end of Mohe County, Heilongjiang Province, near 53°N.
The southernmost point of our territory is the Zengmu Dark Sands, around 4°N. The westernmost point is the Pamirs, around 73°E. The easternmost point is the confluence of the main channel of the Heilongjiang River and the Ussuri River, near 135°E.
Geography of China.
China is located in the east of Asia, on the west coast of the Pacific Ocean. The territory is vast and vast, with a total land area of about 9.6 million square kilometers, second only to Russia and Canada, ranking third in the world, and fourth in the United States. It's about the same size as the whole of Europe.
China's topography is high in the west and low in the east, and it is distributed in a stepped manner. The mountainous and plateau areas are vast. The distance between east and west is about 5,000 kilometers, and the continental coastline is more than 18,000 kilometers long.
In the vast land of China, there are majestic plateaus, rolling mountains, vast plains, gentle hills, and large and small basins surrounded by mountains and low flats in the middle. The five basic terrain types on land are distributed in China, which provides a variety of conditions for the development of China's industry and agriculture.
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The northernmost city on Earth is called Longyearbyen, located in the Arctic Circle.
It is only 1,300 kilometers from the North Pole than Siberia.
Closer to the North Pole
Longyearbyen is Norway.
Territory Spitsbergen.
But there are no settlements or permanent inhabitants in the city, because people fear that there are 116 days a year that is dark all day, and there is an endless amount of snow and 300 meters of permafrost that is low enough to freeze your ears
It is recorded that in 1607, the explorer Hudson discovered the Spitsbergen Islands, and he was very interested in the rich sea beast resources on the island"The best of both worlds"The idea was to exile the condemned prisoners to this archipelago, and to promise the condemned prisoners that if they could survive the harsh winter, they would be pardoned for their crimes, and thus solved the problem of development"New territories"and can obtain very rare and precious furs cheaply
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The old circle on the globe with equal distances from the poles, called the equator, is the longest latitude on the earth, the northernmost point on the earth is the north pole, its latitude is 90°n, and the southernmost point is the south pole, its latitude is 90°s
So the answer is: equator; North Pole; The South Pole key contains hail
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The farthest point on the earth's surface from the continent, do you know in**?
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The northernmost city on Earth is called Longyearbyen, located in the Arctic Circle, only 1,300 kilometers from the North Pole, closer to the North Pole than Siberia?
Longyearbyen is the capital of the Norwegian archipelago of Spitsbergen, but there are no settlements or permanent residents in the city? Because, people are afraid that there are 116 days a year when it is dark all day and there is no snow as far as the eye can see? 300 meters of permafrost?
Minus 40 to 50 is enough to freeze off your ears?
It is recorded that in 1607, the explorer Hudson discovered the Spitsbergen Islands, and he was very interested in the rich sea beast resources on the island. The king took into account the harsh climatic conditions there, so he came up with one"The best of both worlds"The idea was to exile the condemned prisoners to the archipelago and promise them a forgiveness if they survived the harsh winter? In this way, both development is solved"New territories"and can obtain very rare and precious furs cheaply
The setting is different, the classic setting is the ancient giant beast of the earth, and the 2014 Godzilla film follows this setting: in the ancient earth, Godzilla fed on the nuclear energy that was still abundant at the time, and on the other hand, he could also replenish energy by hunting dinosaurs, after all, the dinosaurs at that time were also relatively large. But after the planet hit the earth, the dinosaurs became extinct, and the ecology of the earth has changed dramatically, Godzilla as a race realized that if it still maintains the original way of survival, then it will definitely be extinct, so Godzilla chose to sleep in the depths of the earth's ocean, on the one hand, the depths of the ocean are close to the core of the earth, there is relatively rich nuclear energy, on the other hand, it can greatly reduce the loss of energy and maintain the reproduction of the race. >>>More