Nature of Antarctica

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1. The structure of the earth’s crust and the subglacial relief of Antarctica The structure of the earth’s crust. In the middle of XX century. among scientists there were discussions about what is hidden under the glacial armor of Antarctica: the ocean, the archipelago or the continuous continent. The final answer was given by studies of the earth’s crust. So it was established that the Earth’s crust of […]...
2. Antarctica and Antarctica. The physico-geographical position of the continent and its coastline Physico-geographical position of the continent. Features of the nature of Antarctica are due to the unusual nature of its location on our planet. Almost all of it is located to the south of the Southern Arctic Circle. Only a small part of the continent goes beyond it. Therefore, there is a polar night and a […]...
3. General information about Antarctica The land area is 14 million km2. The population is not permanent. The highest point above sea level is the Vinson massif. The average thickness of the ice cover is -2000 m. The largest island is Berkner. The lowest temperature is -892 ° С. Number of states with scientific research stations -18. The number of […]...
4. The climate of Antarctica The climate of Antarctica is the coldest and harsh on the globe. This is primarily determined by the geographic position of the continent and a significant height above sea level. In the central part of the city there is Polar Day, half a year – Polar Night. During the Polar day, the sun does not […]...
5. Interesting facts about “Antarctica” The existence of the Southern Earth can be read even in the works of ancient scientists who believed that the ratio of land and sea in the Northern and Southern hemispheres should be the same. Otherwise, the ancient sages thought, the balance will break and the Earth will be constantly facing the Sun with a […]...
6. Geographical position of Antarctica. Discovery and research 1. What are the features of the geographical position of Antarctica? To determine the peculiarities of the geographical position of Antarctica, study the political and physical maps of the world. Set the position of the continent in relation to the equator, the initial meridian, the Southern Circle and the South Pole. On the political map, […]...
7. Basic facts on the topic “Antarctica” The physico-geographical position of Antarctica is determined by its location around the South Pole within the Southern Arctic Circle. Therefore Antarctica is the coldest continent on Earth. Antarctica was opened in 1820 by a Russian expedition led by Thaddeus Bellingshausen and Mikhail Lazarev. The members of the Norwegian expedition led by Rual Amundsen reached the […]...
8. Modern studies of Antarctica In the first half of the XX century. The studies of Antarctica were episodic and were limited to individual expeditions. But from the second half of the 50’s. Regular surveys of the continent began at polar stations, which conduct a variety of scientific observations. The result of their work was the first atlas of Antarctica, […]...
9. Painting by Aivazovsky “Ice mountains in Antarctica” The painting “Ice mountains in Antarctica” was written by IK Aivazovsky in 1870. The development of democratic ideas, critical realism in Russian art and painting had an impact on the work of the great seascapes painter. In place of the romantic mood of the painter came a more objective view of the landscape. “Ice Mountains […]...
10. The Organic World of Antarctica The vegetation and fauna of Antarctica are distinguished by their exceptional poverty and originality. Most of the territory of Antarctica lies within the natural zone of the Antarctic deserts. Here scant vegetation is concentrated only in oases. In summer, their stone surface is heated by the sun and warms the surrounding air. Therefore here grow […]...
11. Deserts and semi-deserts of Australia The natural zone of tropical deserts and semi-deserts occupies 65% of Australia’s area and is located mainly in the west, in the center and south of the mainland in a tropical and subtropical continental climate. Soils are tropical desert, very saline and have a red color, which gives them iron oxide. Unlike the African deserts, […]...
12. Waters of the World Ocean 1. What determines the salinity of ocean waters? The world ocean – the main part of the hydrosphere – is a continuous water shell of the globe. The waters of the World Ocean are heterogeneous in composition and differ in salinity, temperature, transparency and other signs. The salinity of the waters in the ocean depends […]...
13. The discovery and the first studies of Antarctica Antarctica was discovered by the last of the continents of the Earth. Even in ancient times, scientists guessed that in the high latitudes of the southern hemisphere there should be a large continent. His quest in his time led to the discovery of Australia, which was considered part of this continent. In the XVIII century. […]...
14. Common features of Africa’s climate Africa is the hottest continent of the world. This is due primarily to the fact that most of its territory is in a hot thermal belt between the tropics. Here throughout the year the sun is high above the horizon and twice a year, anywhere in Africa between the North and South Tropics is at […]...
15. Influence of geographical latitude on the climate of Eurasia The climate of Eurasia is very diverse. The north of the continent lies beyond the Arctic Circle, the southern parts – between the Southern Tropic and the equator. This determines the location of Eurasia in all thermal and climatic zones of the Earth. As in North America, with the progress from north to south, the […]...
16. The relief and minerals of South America 1. What processes form the relief of the east of the continent? To answer this question, you need to compare two maps – a map of the structure of the earth’s crust and a map of the modern relief. Look at these maps and compare the structure of the earth’s crust in the east and […]...
17. General features of the location of natural areas of the southern continents. Their soil map 1. What are the features of the geographic location of the southern continents? A feature of the geographic location of the southern continents can be considered their partial or complete location in the Southern Hemisphere. This situation determines the features of the climate, the combination of natural zones, the nature of human activity on the […]...
18. Relief of North America The relief of North America is closely connected with its tectonic structures. The ancient and young platforms in the modern relief correspond to the plains, the regions of folding in the extreme West and East – the mountains. Plains occupy 2/3 of the surface. The Canadian shield corresponds to the relief of the Laurentian Upland, […]...
19. Climatic conditions and water masses of the Arctic Ocean The climatic features of the ocean are determined by its polar position. During the year over the ocean, the arctic air masses dominate. Most of the solar energy, which still reaches the arctic latitudes, is reflected by ice. The temperature of the ice surface changes with the air temperature, decreasing to -40 ° C during […]...
20. Forming the climate of South America The climate of South America is similar to the climate of other continents of tropical latitudes – Africa and Australia, although here the territories with dry climate are much smaller. By the amount of precipitation, no continent can compete with South America. All these features are determined by a number of climate-forming factors. Like other […]...
21. Deserts and semi-deserts of Eurasia In the most remote from the oceans parts of Central Asia and the Arabian Peninsula, where precipitation is a rarity, a zone of deserts and semideserts stretches. It lies in the continental climatic regions of temperate, subtropical and tropical belts. The largest deserts of the temperate zone are the Karakum, Kyzylkum, Takla-Makan and Gobi. Here, […]...
22. Nature, population and countries of Oceania 1. Explain the relationship of the size, geographic location, terrain and mineral resources of the islands to their origin. Islands can be formed by separation from the mainland. Such islands are called continental islands. The size of such islands is quite large compared with the islands of volcanic and coral origin. The mainland islands are […]...
23. Key facts on the topic “North America” North America is completely located in the Northern and Western hemispheres, stretching almost 7 thousand km from north to south, has a heavily dissected coastline. Its closest neighboring continents are Eurasia and South America. The first of the Europeans reached the northern coasts of North America, the Normans in the 10th century, but information about […]...
24. The interaction of the ocean with the atmosphere and the land 1. How is heat and moisture exchanged between the ocean and the land? The waters of the World Ocean interact with the air of the atmosphere and through the transfer of air masses affect the temperature and humidity on the land surface. 2. What is the difference between air masses formed over land and ocean? […]...
25. Relief and minerals of North America 1. Explain the location of large relief forms on the mainland. Why are the Cordilleras located in the west of the mainland? Map the physical map of North America with a map of the structure of the earth’s crust. The North American platform is expressed in relief by the Central and Great Plains, and the […]...
26. Geological structure, minerals and climate of Oceania The geological structure of the islands of Oceania and their origin are closely related to the structure of the bottom of the Pacific Ocean. In the west of the Pacific, the Pacific and Indo-Australian plates converge, forming uplifts. In the places of their collision, earthquakes and volcanism are observed. Most of the islands of Oceania […]...
27. Geographic location and dimensions of the Pacific Ocean The Pacific Ocean occupies 1/3 of the entire earth’s surface and 1/2 of the World Ocean area. Almost in the middle it is divided by the equator, the meridian passes through its waters 1804 The ocean ishes the shores of five continents. The western part of the ocean is bounded by Eurasia and Australia, the […]...
28. Key facts on the topic “Australia” Australia is the smallest continent in the world, entirely in the Southern Hemisphere. The southern tropic crosses the continent almost in the middle. Australia is remote from other continents by the expanses of the Indian and Pacific Oceans, which explains the uniqueness of its nature. Australia’s shoreline is indented a little. Australia was opened by […]...
29. The relief of South America The geological structure of South America is connected with its relief. At first glance at the physical map of the continent, it can be divided into three parts: lowland – in the center, plateau – in the east, highland – in the west. Platforms on the east of the continent correspond to large plains. On […]...
30. The structure of the earth’s crust of Africa The relief depends on the structure of the earth’s crust, which was formed for a long time. Under the influence of internal and external processes, the main tectonic structures of Africa emerged and deposits of various minerals were formed to the origin. Covered 2-3 billion years ago, Africa’s high mountain systems under the influence of […]...
31. Physiographic location of Eurasia Eurasia is the largest land mass on our planet. In terms of area, it occupies more than 1/3 of the Earth’s total land area. Like North America, Eurasia is located entirely in the Northern Hemisphere relative to the equator. Its extent from west to east is impressive: the continent crosses not only the zero, but […]...
32. Lakes, swamps and underground waters of Africa Lakes. The basins of almost all large African lakes are of tectonic origin, that is, they are in faults, or deflections of the earth’s crust. The largest in the area of ​​the lake of the African continent is Victoria. It is in the deflection of the platform, so it is relatively shallow. Tropical storms often […]...
33. Relief of Australia Since the most ancient platforms in the relief correspond to flat areas, the relief of Australia is rather monotonous and similar to the relief of Africa. Here, too, the territory is mostly flat. The average height is only 215 m above sea level. In the west, within the shield, the plain is somewhat elevated and […]...
34. Natural areas of Africa 1. On the map, determine in which climatic zones are tropical deserts and semi-deserts. To complete this task, you will need maps of natural zones and climatic zones. Determine in what climatic zones are these natural areas. Why did they form exactly in these climatic zones? The main reason is the average annual rainfall, typical […]...
35. Relief of the Earth 1. What is a relief? What are the reasons for its diversity? To answer the second question, it is necessary to imagine how the relief is formed, what forces contribute to the occurrence of unevenness on the Earth’s surface, how the internal and external influences during the formation of the relief differ from place to […]...
36. Forms of relief of the earth’s surface and their formation It is difficult to imagine that in comparison with the real dimensions of the Earth on this model – a globe with a diameter of 1 m – the dimensions of the highest mountain systems and the deepest depressions would not exceed 1 mm. And the ego with the fact that the real maximum elevation […]...
37. Climatic zones of North America Because of the considerable length from north to south, North America is located in all climatic zones of the northern hemisphere, except equatorial. In the arctic climatic zone throughout the year, the cold and dry Arctic air prevails. Here the harsh winters and cold summers. In winter, a polar night reigns. The annual amount of […]...
38. Climatic zones and regions of Eurasia The great extent of Eurasia from north to south determines the formation over its territory of all types of air masses of arctic, temperate, tropical, equatorial. Therefore, the continent is located in all climatic zones of the northern hemisphere. The considerable length of the continent from west to east predetermines the difference in the climate […]...
39. Regularities of the change of natural complexes of land and ocean In the fact that there are different natural complexes on land and in the Ocean, one can be convinced by realizing an imaginary journey along one of the meridians from north to south. Such a change of natural complexes can be traced on all continents. Its main cause on the plains is the change in […]...
40. Regularities of Earth’s climate formation. What determines the climate? Man has long been interested in the peculiarities of climatic conditions and weather, trying to provide for dangerous natural phenomena and avoid them. It is known that the main causes on which the climate of a certain region depends – climate-forming factors – is the amount of solar radiation, the circulation of the atmosphere and […]...