Unique natural objects of the Far East presentation. Geography presentation "Russian Far East" - project, report

One of the important terms in trigonometry is cosine. In this presentation, the cosine function will be considered, its graph is built. All the properties that it possesses will be given in detail.

On the first slide, before starting to consider the function itself, one of the casting formulas is recalled. It was previously demonstrated in detail along with the proof.

This formula says that the cosine function can be replaced with a sine with certain changes in the argument. Thus, having already studied the sinusoids, schoolchildren will be able to build this function. As a result, they will get a graph of the cosine function.


The function graph can be seen on the second slide. You can note that the sinusoid has only shifted by pi / 2. Thus, unlike a sinusoid, the graph of the cosine function does not pass through the point (0; 0).

The first step would be to consider the domain of the function. This is an important point and this is where the analysis of any function in mathematics begins. The scope of this function is the entire numeric axis. This can be clearly seen in the graph of the function.


Unlike sine, the cosine function is even. That is, if you change the sign of the argument, the sign of the function will not change. Parity is determined by the sine property.


The function increases at certain intervals, and decreases at certain intervals. This suggests that the cosine function is monotonic. These intervals are shown on the next slide. The graph clearly shows the increase and decrease of the function.


The fifth property is limitation. The cosine function is bounded both above and below. The minimum value is -1 and the maximum is + 1.


Since there are no break points and sharp peaks, the cosine function, like the sine function, is continuous.

The last slide summarizes all the properties that were discussed in the presentation. These are some of the main characteristics that the cosine function has. Having memorized them, you can easily cope with a number of equations that contain a cosine. It will be easiest to master these properties in the case of a complete understanding of the essence.

Slide 2

  • The Far East is one of the largest economic and geographical regions of Russia. Includes Primorsky and Khabarovsk Territories, Amur, Kamchatka, Magadan and Sakhalin Regions, the Republic of Sakha (Yakutia). Area - 3.1 mln. km2. The total population density in the Far East is very low: less than 1 person per 1 sq. km., the main population clusters: in the region of Magadan, Petropavlovsk-Kamchatsky, in the Amur region and Primorye. The population is about 8 million people.
  • Slide 3

    • The territory of the Far East is stretched from north to south by more than 4.5 thousand. km. It is washed by the Chukchi, Bering, Okhotsk, and Japanese seas. Far East- predominantly mountainous country; the plains occupy relatively small areas, mainly along the valleys of large rivers (Amur and its tributaries, Anadyr, etc.). There are active volcanoes in Kamchatka.
  • Slide 4

    Primorsky Krai

    • Primorsky Krai is located in the southern part of the Far East, occupies an area of ​​165.9 thousand km2. It borders on the PRC and the DPRK, in the north - with the Khabarovsk Territory, in the east it is washed by the waters of the Sea of ​​Japan.
    • Most of the territory is occupied by mountains belonging to the Sikhote-Alin system. The most extensive lowland is Ussuriiskaya. The climate is characterized by a pronounced monsoon character. Most of the rivers belong to the Amur basin.
  • Slide 5

    • Mineral resources: tin, polymetals, tungsten, gold, coal, building materials. Primorsky Krai has a developed diversified agriculture.
    • The share of livestock in agricultural products is 60%. In the total consumption of the population of the region, the local production of vegetables, milk and meat accounts for up to 60-65%; The population is fully provided with its own potatoes.
  • Slide 6

    • Primorye is the most developed region of the Far East in terms of transport. The territory of the region from north to south is crossed by the final section of the Trans-Siberian Railway, which has several exits to sea ​​coast, where large transport hubs have been created (Vladivostok, Nakhodka, etc.)
    • Economic ties of the region: fish and fish products, timber, furs, soybeans, rice, honey are exported; imported ferrous metals, machinery and equipment, petroleum products, food products and light industry, building materials.
  • Slide 7

    Khabarovsk region

    • Khabarovsk Territory borders with Primorsky Territory, Amur and Magadan regions. It is washed by the Sea of ​​Okhotsk and the Sea of ​​Japan.
    • The mountainous relief prevails here (over 70% of the territory), the climate is monsoon, with severe and little snowy winters and warm, humid summers.
    • The rivers of the territory of the region belong to the basins of the Pacific and Arctic oceans. The most large river edge - Cupid.
  • Slide 8

    • Minerals: tin, mercury, iron ore, coal and brown coal, graphite, manganese, feldspar, phosphorites, building materials, peat.
    • The regional center is the city of Khabarovsk (601 thousand people). Largest cities regions: Komsomolsk-on-Amur, Birobidzhan, Amursk. Agriculture poorly developed.
    • Sea transport is developed, air transport is widely used. The Okha-Komsomolsk-on-Amur oil pipeline is in operation.
  • Slide 9

    • Economic ties Khabarovsk Territory: exported products of mechanical engineering and metalworking of nonferrous and ferrous metallurgy, forestry, woodworking and pulp and paper industries, chemistry, fish and fish products; imported oil and oil products, ferrous metallurgy products, machinery and equipment, light industry products, food.
  • Slide 10

    • In the Far East, ferrous and non-ferrous metallurgy, mechanical engineering and metalworking, shipbuilding and ship repair, oil refining, as well as forestry, textile, food and fish industries are developed. Population occupations: reindeer breeding, hunting (fishing); live here: Russians, Evenks, Evens, Chukchi, Koryaks, Yakuts;
    • The largest cities in the Far East: Magadan, Petropavlovsk-Kamchatsky, Komsomolsk-on-Amur, Blagoveshchensk, Khabarovsk, Yuzhno-Sakhalinsk, Vladivostok.














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    Presentation on the topic: Far East

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    The Far East stretches along the Pacific Ocean for almost 4500 km from northeast to southwest, from Chukotka to the border with the DPRK and Japan. The Far East stretches along the Pacific Ocean for almost 4500 km from northeast to southwest, from Chukotka to the border with the DPRK and Japan.

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    Most of the mountain structures in the Far East were formed in the Mesozoic and Cenozoic. Powerful mountain-building processes and shifts of lithospheric plates continue. This is evidenced by intense earthquakes and seaquakes. The arched ridges also include volcanic mountains. The largest of them - Klyuchevskaya Sopka (Kamchatka) - systematically throws out ash and lava. Volcanic processes are accompanied by geysers, numerous sources of thermal waters. In Kamchatka, they are used to heat buildings and greenhouses, and generate electricity. Many mountains of the Far East are composed of solidified lavas, tuffs, pumice and other volcanic rocks. Most of the mountain structures in the Far East were formed in the Mesozoic and Cenozoic. Powerful mountain-building processes and shifts of lithospheric plates continue. This is evidenced by intense earthquakes and seaquakes. The volcanic mountains are also part of the arched ridges. The largest of them - Klyuchevskaya Sopka (Kamchatka) - systematically throws out ash and lava. Volcanic processes are accompanied by geysers, numerous sources of thermal waters. In Kamchatka, they are used to heat buildings and greenhouses, and generate electricity. Many mountains of the Far East are composed of solidified lavas, tuffs, pumice and other volcanic rocks.

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    The climate of the Far East is distinguished by a special contrast - from sharply continental (all of Yakutia, Kolyma districts of the Magadan region) to monsoon (southeast), which is due to the huge length of the territory from north to south. This is determined by the interaction of continental and sea air masses of temperate latitudes. The climate of the Far East is distinguished by a special contrast - from sharply continental (all of Yakutia, Kolyma districts of the Magadan region) to monsoon (southeast), which is due to the huge length of the territory from north to south. This is determined by the interaction of continental and sea air masses of temperate latitudes. In the northern part, the climate is extremely harsh. Winter with little snow, lasts up to 9 months. The southern part has a monsoon-type climate with cold winters and humid summers.

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    In winter, cold air streams rush to the southeast from the powerful Asian High. In the northeast, along the outskirts of the Aleutian minimum, cold continental air Eastern Siberia interacts with the warm sea air. In winter, cold air streams rush to the southeast from the powerful Asian High. In the northeast, on the outskirts of the Aleutian minimum, the cold continental air of Eastern Siberia interacts with the warm sea air. As a result, cyclones often occur, which are associated with a large amount of precipitation. There is a lot of snow in Kamchatka, snowstorms are not uncommon. On the eastern coast of the peninsula, the height of the snow cover in some places can reach 6 m. Snowfalls are also significant on Sakhalin.

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    In the summer, air currents rush from the Pacific Ocean. In the summer, air currents rush from the Pacific Ocean. Marine air masses interact with continental, as a result of which monsoon rains fall throughout the Far East in summer. The monsoon climate of the Far East covers the Amur Region and the Primorsky Territory. As a result, the largest Far Eastern river Amur and its tributaries overflow not in spring, but in summer, which usually leads to catastrophic floods. Destructive typhoons from the southern seas often sweep over coastal areas.

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    Rivers are rich in hydropower, the deepest of them is the Amur. The region's hydrographic network is very extensive and abundant. Among the largest are the basins of the Lena, Amur, Yana, Indigirka, Kolyma, etc. “The rivers are rich in valuable species of fish, they are transport routes, including in winter, when winter roads are laid on the ice. The region is also rich in thermal waters. Hot springs, especially in Kamchatka, feed rivers that do not freeze in winter. " But most rivers, of course, freeze in winter. The origin of geysers is associated with volcanic activity. Hot springs water contains zinc, antimony, arsenic, has medicinal value and offers great opportunities for creating a resort base. Rivers are rich in hydropower, the deepest of them is the Amur. The region's hydrographic network is very extensive and abundant. Among the largest are the basins of the Lena, Amur, Yana, Indigirka, Kolyma, etc. “The rivers are rich in valuable species of fish, they are transport routes, including in winter, when winter roads are laid on the ice. The region is also rich in thermal waters. Hot springs, especially in Kamchatka, feed rivers that do not freeze in winter. " But most rivers, of course, freeze in winter. The origin of geysers is associated with volcanic activity. Hot spring water contains zinc, antimony, arsenic, has medicinal value and offers great opportunities for creating a resort base.

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    The reserves of the forest resources of the Far East are large and varied. Forests here account for over 35% of the total Russian resources. The reserves of the forest resources of the Far East are large and varied. Forests here account for over 35% of the total Russian resources. The most widespread forests are larch forests, in which the bulk of timber reserves (more than 60%) are concentrated. Spruce-fir forests make up more than 5% of the area of ​​all forests and 12% of the timber reserves of the Far East. The most valuable are cedar-deciduous forests (with the highest wood concentration), which make up about 3 million hectares. They cover 1% of the territory of the Far East. Among forest resources of non-wood origin, unique species should be noted medicinal plants(ginseng, eleutherococcus, Manchurian aralia and others, more than a thousand species in total), as well as hundreds of species of food plants, mushrooms, etc.

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    Marine animals are of industrial importance: fish, mollusks, sea animals, etc. the most unique types of land animals are Ussurian tiger, brown and Himalayan bears, East Siberian leopard, etc. Marine animals are of industrial importance: fish, mollusks, sea animals and other unique species of land animals are the Ussuri tiger, brown and Himalayan bears, East Siberian leopard, etc. types of fur animals. To the most known species Far East animals include squirrel, otter, ermine, white hare, raccoon dog, Siberian weasel, fox, American mink, muskrat, arctic fox, sable, red deer, wild boar, musk deer, roe deer, elk, reindeer, bighorn sheep, and many others. Up to 100 species (often the rarest) of birds nest here.

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    The total area of ​​nature reserves in the Far East is 37.16 thousand km, or 1.19% of the region's territory. This is significantly higher than the same indicator for Russia as a whole. The total area of ​​nature reserves in the Far East is 37.16 thousand km, or 1.19% of the region's territory. This is significantly higher than the same indicator for Russia as a whole. By administrative divisions, the reserves are located unevenly: in the Magadan Region - 2, Kamchatka - 1, Sakhalin - 1, Amur - 2, Khabarovsk Territory - 2, Primorsky Territory - 5.