8th grade Geography Volume I Mind Map (2)

7. Material circulation in the earth's crust. Internal and external factors of surface topography change

9. Atmospheric heating process

10, pressure zone and wind zone

? 1 1, weather system

12, water cycle

13, ocean current

14, physical geographical elements and geographical environment

15, integrity of geographical environment

16, the regional differentiation law of geographical environment

17, surface morphology, settlements and traffic routes

Climate change and human activities

19, natural resources and human activities

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20.natural disasters

8th grade geography review outlines the territory of China.

1, the geographical location of China: located in the eastern hemisphere, the northern hemisphere, the eastern part of Asia and the west coast of the Pacific Ocean. The superiority of China's geographical position;

① From the latitude position, the north and south span a wide latitude, most of them are located in the mid-latitude area, belonging to the north temperate zone, and a few areas in the south belong to the tropical zone without cold;

② From the land and sea position, China is located in the east of Eurasia, the largest continent in the world, and borders many countries in the west. The east is adjacent to the Pacific Ocean, the largest ocean in the world, with many islands and harbors, and it is a country with both land and sea.

2. Vast territory: the land area is 9.6 million square kilometers, ranking third in the world after Russia and Canada.

① China's land border is long, reaching 20,000 square kilometers, and there are 14 countries bordering it: eastern Korea, northern Mongolia, northeast and northwest Russia; Hajita Aba in the west; Danny in southwestern India; There are Myanmar, Laos and Vietnam in the south. There are six countries across the sea: Indonesia, Malaysia, Wen Fei, Japan and South Korea.

China is an important maritime power in the world, with a coastline of over18,000 kilometers, which is one of the longest countries in the world. There are more than 6,500 islands with a sea area of over 500 square meters in China. The width of China's territorial sea is 12 nautical mile. The sea area under the jurisdiction of China is about 3 million square kilometers. Linhai (from north to south): Bohai Sea, Yellow Sea, East China Sea and South China Sea. The sea area is 3 million square kilometers;

③ The coastline is long 1.8 million kilometers. The main islands are Taiwan Province Island, Hainan Island, Zhoushan Islands and South China Sea Islands, and there are six maritime neighbors (from south to north, South Korea, Japan, Philippines, Malaysia, Brunei and Indonesia).

3. Territory 4: the northernmost point: the center of Heilongjiang main channel north of Mohe; Southmost tip: Zengmu shoal; The easternmost point: the confluence of Heilongjiang and Wusuli rivers; The westernmost point: Pamir Plateau in Xinjiang.

It spans nearly 50 latitudes from north to south, about 5,500 kilometers, and more than 60 latitudes from east to west, about 5,000 kilometers. This is a vast country with remarkable differences in natural environment.