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If you want to say why, I'm afraid it can only be two words for you, coincidence. The structure and evolution of the earth's continents have their own internal laws, but it is the most primitive state that causes the current state, but the laws only direct it in one direction. Heard of the Butterfly Law, right?
A butterfly in South America flapps its wings and ends up causing a tropical storm. Who knows if 65 of the continents in the Northern Hemisphere were some kind of animal from a prehistoric civilization farting? The reason for these questions can only be taught by philosophy.
This question of yours, basically, is difficult.
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Coincidence, accident.
You can check the distribution of the global ** belt, ** belt is mostly the seam between plates, most of them are in the northern hemisphere, the crust at the junction is violently moving, a large number of volcanic ejections make the continent uplift from the seabed, and also let the land in other places sink into the ocean.
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Because of continental drift
You can check out the theory of continental drift
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Since the geological time we already know, the land area has been mainly concentrated in the northern hemisphere, and as for why this is so, there is no good explanation for this in our current science, but it can only be said that it is very accidental.
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It's just a coincidence, because when the Archean continent was gradually formed, it appeared in our artificially divided northern hemisphere, and with the movement of the earth's crust, the primitive continent gradually formed what it is today.
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Because 100 million years ago, when the continent was still a whole. Right in the Northern Hemisphere. Later, it drifted, but it was still more in the northern hemisphere.
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The influence of the internal forces of the earth's core is to push it,
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Attracted by the geomagnetic field as well as the cosmic magnetic field.
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The reason for the difference in land area between the northern and southern hemispheres may be related to the different geostrophic deflection forces in the northern and southern hemispheres.
According to the theory of continental drift, land is like a piece of wood floating on the water, and where it drifts is determined by the force on it, because the earth is not perfectly round, but a three-axis elliptical sphere like a pear, so the rotation speed of the northern and southern hemispheres is inconsistent.
The area of the northern and southern hemispheres is equal, but the distribution of land and sea in the two hemispheres is quite different, with the northern hemisphere having a large land mass and the southern hemisphere having a small landmass. The Northern Hemisphere covers 39% of the total land area and 61% of the ocean. The land area of the southern hemisphere accounts for only 19% of the total hemisphere area, and the ocean surface volume accounts for 81%.
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The land is mainly distributed in the northern hemisphere.
The parts of the Earth's surface that are not submerged by sea water include continents and islands. The total area is 100 million square kilometers, accounting for the surface area of the earth.
The vast land area is called the continent, and there are six continents in the world, including the Eurasian continent, the African continent, the North American continent, the South American continent, the Australian continent and the Antarctic continent, with a total area of 100 million square kilometers, accounting for about 93 of the total land area; The small piece of land surrounded by sea is called an island, with a total area of 9.8 million square kilometers, which accounts for about 7 percent of the total land area. Sedan banquet.
Most of the land is distributed in the northern hemisphere, and the islands are mostly found on the east coast of the mainland. The surface of the land is undulating, with mountains, plateaus, plains, basins, etc.
Introduction to the Earth's oceans
The total area of the Earth's oceans is about 100 million square kilometers, accounting for about 71 of the earth's surface area, and the average water depth is about 3,795 meters. The ocean contains more than 1.35 billion cubic meters of water, accounting for about 97 percent of the Earth's total water, and only 2 percent of it can be used for human drinking.
The four main oceans of the earth are the Pacific Ocean, the Atlantic Ocean, the Indian Ocean, and the Arctic Ocean, most of which are bounded by land and submarine topography. Today, only 5 of the seabed has been explored, and 95 of the seabed is unknown.
The oceans cover more than 70% of the Earth's surface and are the main drivers of weather and climate. A small fluctuation in ocean temperature can cause drastic changes in weather and climate around the world.
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It is mainly found in the northern hemisphere.
One. Relevant knowledge.
1.The world's land and sea are very unevenly distributed, with land mainly concentrated in the Northern Hemisphere, but the Arctic is surrounded by an ocean (Arctic Ocean); The oceans are mainly concentrated in the north and south spheres, but around the South Pole is a land mass (Antarctica). Among the seven continents, Europe and North America are all in the Northern Hemisphere, most of Asia is also in the Northern Hemisphere, more than half of Africa is in the Northern Hemisphere, and a small part of South America is also in the Northern Hemisphere.
2.Only Oceania and Antarctica are all in the Southern Hemisphere. In terms of the eastern and western hemispheres, only North and South America are in the western hemisphere, while Asia, Europe, Africa, and Oceania are all in the eastern hemisphere.
As for Antarctica, it is found in both the eastern and western hemispheres. In contrast, land is mainly distributed in the northern and eastern hemispheres, and oceans are mainly distributed in the southern and western hemispheres. The land area of the northern hemisphere accounts for 39, and the ocean accounts for 61.
In the middle and high latitudes of the Northern Hemisphere, the land area is almost continuous and vast. The southern hemisphere has only 19 land areas and 81 oceans, of which the high latitudes, with the exception of some islands, are almost entirely oceans.
3.The eastern hemisphere has 38 land and 62 oceans; The Western Hemisphere has 20 land and 80 oceans. The Arctic region is a piece of ocean, the Arctic Ocean, and the Antarctic region is a piece of land, the Antarctic continent.
Two. Related Extensions.
1.From the perspective of hemispheric position, most of the land is distributed in the northern hemisphere, and the part of the earth's surface that is not submerged by seawater, including continents and islands, has a total area of 100 million square kilometers, accounting for the earth's surface area. The vast land area is called the continent, and there are six continents in the world, including the Eurasian continent, the African continent, the North American continent, the South American continent, the Australian continent and the Antarctic continent, with a total area of 100 million square kilometers, accounting for about 93 of the total land area;
Surrounded by sea water 2The small patches of land that surround them, called islands, have a total area of 9.8 million square kilometers, or about 7% of the total land area. Most of the land is distributed in the northern hemisphere, and the islands are mostly found on the east coast of the mainland.
The land surface is undulating, with mountains, plateaus, plains, basins, etc. <>
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One question is which hemisphere is the land mainly concentrated?
Their personal understanding is that the land is mainly concentrated in the northern hemisphere, mainly in the south of the northern hemisphere, and there is very little land in the southern hemisphere, and there is very little land!
The vast majority are in the Northern Hemisphere, all in the Northern Hemisphere.
Affection is an umbrella term for emotions and emotions. Emotions and emotions are considered to be two forms of emotional mental activity that are different from cognition. Among them, emotion is the feeling and experience of an emotional process, and emotion is the process of this experience and feeling state.
Therefore, emotions and emotions are two aspects of the same activity of feelings, and feelings are a comprehensive process that includes emotions and emotions. In Chinese, the product of the emotional process is often referred to as emotion, or emotion and emotion are regarded as synonymous.
Detailed definitions. 1) Psychological definition of "emotion".
Psychology defines emotion as: "A special form of reflection of objective reality, which is the experience of people's attitudes towards whether objective things meet people's needs." ”
2) Conversion of the definition of "emotion".
From this psychological definition, we can understand that emotion is a subjective experience, subjective attitude, or subjective reflection. It belongs to the category of subjective consciousness, not to the category of objective existence.
Dialectical materialism holds that any subjective consciousness is a reflection of objective existence by human beings, and emotion is a special subjective consciousness, which must correspond to a special objective existence, and the key to the problem lies in whether this special objective existence can be found.
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The land is mainly distributed in the northern hemisphere.
About 71% of the Earth's surface is covered by rising land, while 29% is in the underwater ocean. The land mass is mainly found in the northern hemisphere, and the land area in the southern hemisphere is smaller.
The Northern Hemisphere is a hemisphere of the Earth that includes all areas north of the Earth's equatorial line. The northern hemisphere is home to most of the land and population, mainly Asia, Europe, North America, and parts of South America. The climate and ecosystems of the Northern Hemisphere vary greatly depending on the geographical location and climatic factors.
Many regions have climates with four distinct seasons that are suitable for growing a variety of crops, and agriculture is more developed in the northern hemisphere than in the southern hemisphere.
The Southern Hemisphere is a hemisphere of the Earth that includes all areas south of the Earth's equator line. The Southern Hemisphere is mainly made up of waters, with the largest land mass being Antarctica, and most of the rest of the broad fronts being oceans. The Southern Hemisphere also includes oceans such as the South Pacific and the South Atlantic.
The climate and ecosystems in the Southern Hemisphere are different from those in the Northern Hemisphere. The climate on the Antarctic continent is cold and dry, with almost no plants and animals and a short lifespan.
The distribution and evolution of land and ocean is a complex process, which is affected by a variety of factors, such as geological structure, climate change, biological evolution, etc.
The evolution of the land
Land evolution refers to the long and complex process of change of the earth's land from its formation to the present. Land evolution involves many factors such as the structure of the earth's interior, the movement of matter, climate and environment. Here are the stages of terrestrial evolution and their main features:
1. Formation stage: About 4.5 billion years ago, the earth was formed, the land was not yet formed, and the earth was just an almost spherical object with water. Over time, the accretary land initially consisted of only a few hydrothermal outcrops and islands.
2. Social stage: About 100 million years ago, cells began to appear on the earth and evolved into eukaryotic organisms. Ferns and gymnosperms also began to appear on land. The Earth changes slowly during this phase.
3. Life stage: About 100 million years ago, life evolved rapidly, and a wide variety of vegetation and animals appeared on land. Fish, amphibians, reptiles, birds, etc., appeared.
This stage is also a time of drastic changes in the Earth's climate and environment, such as large-scale extinction events on Earth.
4. Cenozoic Stage: About 60 million years ago to the present, this is the last stage of the Earth's terrestrial evolution. The Earth's land has basically taken shape to its current form, and humans have emerged, carrying out large-scale land development and transformation, resulting in the threat and extinction of some vegetation.
Climate and environmental changes are also more pronounced, and the global climate and environment are also affected by human activities.
The largest animal on land - the African elephant.
It is because of the geostrophic deflection force.
The horizontal geostrophic deflection force, also known as the geodeflection force, is a force generated by the rotation of the earth with the earth's graticule as the reference frame. Geostrophic deflection is a component of the Coriolis force (Coriolis force) in the direction along the Earth's surface. It is the third type of inertial force that is often introduced, and the first two types are translational inertial force and inertial centrifugal force. >>>More
There are several reasons for this:
1. The land area of the northern hemisphere is much larger than that of the southern hemisphere, so the amount of onshore runoff injection is more. It has a stronger dilution effect on seawater than in the southern hemisphere. >>>More
Because cats can only live on land.
The geologic distribution of the Earth determines the location of the continents and oceans. There is emptiness around the South Pole of the Earth, and there are peaks in the South Pole; The North Pole is surrounded by continents, and the center of the Arctic will inevitably collapse. Otherwise, the mass distribution of the entire planet will be out of balance. >>>More