The geography knowledge points of liberal arts in senior three are memorized skillfully.

# Senior 3 # Introduction Although geography in senior high school is called liberal arts and science, it needs memory as much as political history. In order to facilitate students' memory, I have compiled the following knowledge points of high school geography and memorized them skillfully. Welcome to consult them. High school geography formula-general formula

1, one near is fast, seven far is slow. 1 At the beginning, the earth revolved to perihelion, with the fastest revolution speed; At the beginning of July, the revolution reached the perihelion, and the revolution speed was the slowest. Pay special attention to the summer solstice near the apohelion, not the apohelion; The winter solstice is near the perihelion, not the perihelion. From this, it can be analyzed that the summer half year in the northern hemisphere is longer than the winter half year, and the polar day in the Arctic is longer than that in the South Pole.

2. The left focus tilts to the left in winter and the right focus tilts to the right in winter. In the signal that the earth revolves around the sun, if the sun is at the left focus and the earth axis is tilted to the left, the position on the left is the winter solstice; If the sun is in the right focus and the earth's axis is tilted to the right, the position on the right is the winter solstice. The location of the winter solstice was determined, and the locations of the other three vernal equinox were also determined.

The days are long in the north and long in the south. The direct point of the sun is in the northern hemisphere, where the days are long and the nights are short, and the farther north, the longer the days are; The direct point is in the southern hemisphere, where the days are long and the nights are short, and the days are longer as you go south.

4, convex high is low, convex low is high. On the isoline map, if the isoline protrudes to a high value, the middle value is a low value relative to both sides; If the isoline protrudes to a low value, the middle value is higher than both sides. This method is suitable for all isolines.

5, concave slope visibility, convex slope visibility. In the contour topographic map, from high to low, the contour line changes from dense to sparse to concave slope to visibility; The contour line from sparse to dense to convex slope can't be seen through.

6. Rivers are concave and ocean currents are convex. On the contour map, the flow direction of the river is opposite to the protruding direction of the contour, that is, depression; On the isotherm diagram, the flow direction of ocean current is the same as the direction of isotherm protrusion, that is, ocean current flows in the direction of isotherm protrusion.

7. The erosion slope of concave bank is steep, and the accumulation slope of convex bank is slow. Due to the inertia of river movement, the concave bank is seriously washed by the river, and the slope of the concave bank is steep; The convex bank has slow flow velocity, sediment accumulation and gentle slope. Pay special attention to the fact that the geostrophic deflection force cannot be used at bends. In addition, the judgment of concave-convex banks must be viewed from the river surface.

8, north against south, winter against summer. Seen from above the North Pole, the earth's rotation is counterclockwise and the South Pole is clockwise. The monsoon circulation in the North Indian Ocean is clockwise in summer and counterclockwise in winter.

9, low to high. (1) Under the influence of ocean currents, at the middle and low latitudes, the seawater isotherm is opposite to the isosalt line; In the middle and high latitudes, the seawater isotherm and isosalt line protrude in the same direction. ② In the middle and low latitudes, the numerical variation trends of seawater isotherm and isosalt line are opposite; In the middle and high latitudes, the numerical variation trend of seawater isotherm and isoline is consistent. (3) The mid-low latitude ocean current presents an anticyclonic ocean current (clockwise in the northern hemisphere and counterclockwise in the southern hemisphere); The mid-high latitude ocean current presents a cyclonic ocean current.

10, the left increases by one level, and the right increases by one level. On the triangle coordinate diagram, when reading the coordinates of an axis, if the value of the axis increases to the right (that is, counterclockwise), it is the parallel line of the left axis of the axis, and the intersection of the parallel line and the axis is the reading; If the value of the axis increases to the left (i.e. clockwise), take the parallel line of the right axis of the axis, and the intersection of the parallel line and the axis is the reading.

High school geography formula-characteristics of regional agriculture

1, Qinling Huaihe River Line, agricultural characteristics of north and south: the north is dry land with water irrigation;

2. Northeast spring wheat, the first ripe year of crops; Winter wheat in North China can ripen three times in two years.

3. South of Qinhuai Line, there are many paddy fields in cultivated land; Two or three years old, focusing on rice.

4. Hydrological characteristics change, and the flood season of Beihe River is short; The ice flow is small, and the mixed water becomes obvious.

High School Geography Formula-Topographic Boundary

1. The dividing line between Inner Mongolia Plateau and Northeast Plain: Daxinganling.

2. The dividing line between the Loess Plateau and the North China Plain: Taihang Mountain.

3. The dividing line between Sichuan Basin and the plain in the middle and lower reaches of the Yangtze River: Wushan.

4. The dividing line between Yunnan-Guizhou Plateau and Qinghai-Tibet Plateau: Hengduan Mountains.

5. The dividing line between Junggar Basin and Tarim Basin: Tianshan Mountain.

6. The boundary between Qinghai-Tibet Plateau and Tarim Basin: Kunlun Mountain.

7. The dividing line between the Loess Plateau and Hanshui River Basin: Qinling Mountains.

8. The dividing line between Hexi Corridor and Qaidam Basin: Qilian Mountain.

9. The dividing line between Sichuan Basin and Hanshui Basin: Daba Mountain.

10. The dividing line between the Inner Mongolia Plateau and the Loess Plateau: the ancient Great Wall.

1 1. The dividing line between the middle and lower reaches of the Yangtze River and the North China Plain: Huaihe River.

High school geography formula-climate boundary

1 and 1 (also the dividing line between subtropical zone, warm temperate zone and plateau climate zone) 0℃ isotherm: roughly along the southeast edge of the Qinghai-Tibet Plateau, and eastward across the Qinling-Huaihe line.

2.800 mm isoprecipitation line (dividing line between humid area and semi-humid area): along the southeast edge of Qinghai-Tibet Plateau, it crosses the Qinling-Huaihe line eastward.

3.400 mm isoprecipitation line (dividing line between semi-humid area and semi-arid area): from the western slope of Daxing 'anling to the eastern Himalayas via Zhangjiakou, Lanzhou and Lhasa.

4.200mm isoprecipitation line (the dividing line between semi-arid area and arid area): it passes through Yinshan Mountain, Helan Mountain, Qilian Mountain and Bayankala Mountain to Gangdise Mountain.

High School Geography Formula-River Boundary

1. Boundary between outflow area and inflow area: the northern section is roughly along the line from Daxinganling to Yinshan to Helan Mountain to Qilian Mountain (east end), and the southern section is close to the 200 mm isoprecipitation line.

2. The watershed between the Yangtze River system and the Yellow River system: bayan har to Qinling Mountains.

3. The watershed between the Yangtze River and the Pearl River: Nanling.

4. The watershed between Lancang River and Nujiang River: Nvshan.

5. The watershed between the Yangtze River basin and the southeast coastal rivers: Wuyishan.

High School Geography Formula-Natural Regional Boundary

1, the boundary of the natural area in the eastern monsoon region.

(1) The boundary between the southern district and the northern district (warm temperate humid zone in North China and subtropical humid zone in Central China): Qinling-Huaihe River (1October 1℃ isotherm, daily average temperature ≥ 10℃, accumulated temperature ≥ 4,500℃ isoline).

② The boundary between the humid and semi-humid areas in the temperate zone of Northeast China and the humid and semi-humid areas in the warm temperate zone of North China: the isoline with daily average temperature ≥ 10℃ and accumulated temperature ≥ 3,200℃.

③ The dividing line between the subtropical humid area in Central China and the tropical humid area in South China: the isoline with daily average temperature ≥ 10℃ and accumulated temperature ≥ 7,500℃. Natural boundary of arid and semi-arid areas in northwest China.

2. The dividing line between Inner Mongolia temperate grassland area and northwest temperate and warm temperate desert area: Helanshan line, which is equivalent to 200mm isoprecipitation line.

3.( 1) The boundary between pastoral area and agricultural area: approximately close to the 400 mm isoprecipitation line.

(2) The dividing line between paddy field and dry land: Qinling-Huaihe River.

Senior high school geography formula-administrative boundary

1. The boundary between southern Xinjiang and northern Xinjiang (the boundary between mobile sand dunes and fixed and semi-fixed sand dunes): Tianshan Mountain.

2. The dividing line between Hubei Province and Chongqing City: Wushan.

3. The border between Fujian Province and Jiangxi Province: Wuyi Mountain.

4. The border between Guangdong Province and Hunan Province: Nanling.

5. The border between Xizang Autonomous Region and Xinjiang Uygur Autonomous Region: Kunlun Mountain.

6. The dividing line between Gansu Province and Qinghai Province: Qilian Mountain.

7. The dividing line between Sichuan Province and Shaanxi Province: Daba Mountain.

High school geography formula-comprehensive geographical boundaries

1, Qinling-Huaihe line is an important geographical dividing line in China, and the landscape of this line is very different between north and south; ① the southern boundary of the Loess Plateau

② It is roughly where the 0℃ isotherm of 65438+ 10 and the 800 mm precipitation line pass.

③ The dividing line between subtropical zone and warm temperate zone.

(4) The boundary between moist area and semi-humid area.

⑤ The boundary between subtropical evergreen broad-leaved forest and temperate deciduous broad-leaved forest.

6. Is there an ice age boundary for rivers?

⑦ The boundary between agricultural paddy field and dry land, three crops in two years and two crops in one year, rice and wheat miscellaneous grains.

The dividing line between the Yangtze River system and the Yellow River system.

2. Daxinganling is also an important geographical dividing line in China, and its landforms on the east and west sides are also quite different: ① the place where the 400 mm isoprecipitation line passes.

② the dividing line between monsoon region and non-monsoon region.

(3) the dividing line between the inner flow area and the outer flow area.

④ The dividing line between Inner Mongolia Plateau and Northeast Plain.

⑤ Where the dividing line between the second and third levels of Chinese topography passes.

⑥ Where the dividing line between forest landscape and grassland landscape passes.

The formula of geography in senior high school-the memory song of geographical position

Up north, down south, left west,

Distinguish the right hand from the east hand;

News from east, west, north and south,

Quadrilateral symbol news theory

(that is, north latitude-n; East longitude-e; West longitude-w; South latitude-south latitude. )