Who can provide high school geography must memorize knowledge points 20

Most of the necessary knowledge points are concentrated in the labor geography part, such as agricultural industry, interest factors and so on.

The high school website authoritatively released the knowledge points that must be memorized in the geography of the college entrance examination, and for more information about the knowledge points that must be memorized in the geography of the college entrance examination, please visit the high school website. 【Introduction】In the review process of the college entrance examination, do you know which knowledge points must be memorized? The following is the knowledge points that must be memorized in the geography of the college entrance examination collected and sorted out by the big *** for the big lead side, I believe these words will be helpful to you.

Geography must memorize knowledge points in the college entrance examination: ecological issues1) Soil erosion and (2) desertification.

Analysis of the causes of soil erosion on the Loess Plateau:

1) Natural causes:

The terrain is undulating and the slope is steep. Clan Exciting Spring.

The soil is loose and the vertical joints are developed (Loess Plateau).

Heavy precipitation and concentrated in summer, with heavy rainfall.

Low vegetation coverage.

2) Anthropogenic causes: destruction of vegetation.

Over-cultivation, over-grazing, over-harvesting.

Mining. Unreasonable land use.

Consequences (hazards) of soil erosion:

Leaving the land barren and reducing crop yields.

The downstream riverbed is raised, reducing the flood discharge capacity.

The lake is silted up, the reservoir capacity is reduced, and the flood storage standard is lowered.

3) Drought and water shortage.

Typical areas in China: spring drought in North China, nine drought in Northwest China, drought in the middle and lower reaches of the Yangtze River, and winter drought in southern China.

Spring drought in North China.

Causes: Natural causes: a: The spring rain belt has not arrived, and the precipitation is scarce; B: In spring, the temperature rises quickly and evaporates vigorously.

Anthropogenic reasons: wheat is green and requires a lot of water.

Geography must memorize knowledge points in the college entrance examination: energy issuesThe construction of the China-Kazakhstan oil pipeline is a win-win situation for both countries

Kazakhstan: Kazakhstan can transform its oil resource advantage into an economic advantage;

Expand oil export channels.

promote the construction of infrastructure along the Kazakhstan route;

Promote the development of related industries and increase employment opportunities.

China can reduce its dependence on Middle Eastern oil and diversify its oil import channels.

The pipeline is located in the interior of Asia, and the safety of the oil transmission line is good;

The proximity can save on transportation costs.

The energy consumption structure has been improved.

Geography must memorize knowledge points in the college entrance examination: population issuesCompare the characteristics and causes of population distribution and urban distribution in Canada and Australia.

Australia: It is concentrated in the southeast coastal area, and the population and cities in the central and western regions are small.

Australia: It is concentrated in the southeast coastal area, and the population and cities in the central and western regions are small.

Nature: The southeast has a warm and humid climate; The terrain is flat; Water is plentiful.

Socio-economic: agriculture and animal husbandry, industry and mining are developed;

The history of development is relatively early;

Many excellent harbors, convenient transportation.

The climate of the Midwest is arid, desert, and grassland.

Canada: It is concentrated in the southern corridor, and the population and cities in the north are sparse.

The southern climate is warm in summer; industry and agriculture are developed; Convenient transportation. The north is cold and economically backward.

1. The gradual change of longitude: the degree of eastward increases to east longitude, and the degree of westward increases to west longitude.

2. The gradual change of latitude: the number of degrees to the north increases to the north latitude, and the number of degrees to the south increases to the south latitude.

3. The shape and length of the wefts: circles parallel to each other, the equator is the longest weft coil, which gradually shortens towards the poles.

4. The shape and length of the meridians: All the meridians are semicircles that intersect the north and south poles, and the length is equal.

5. Judgment of the east-west longitude: the east longitude increases along the direction of rotation, and the west longitude decreases.

6. Judgment of north and south latitude: the degree increases to the north to the north latitude, and the south increases to the south latitude.

7. The division of the eastern and western hemispheres: 20°W to the east to 160°E is the eastern hemisphere, and 20°W to the west to 160°E is the western hemisphere.

8. Judgment of east-west direction: inferior arc law (for example, 80°E longitude is east of 1°E longitude, and west of 20170°W longitude).

9. Scale size and diagram range: the same diagram sheet, the larger the scale, the smaller the range; The smaller the scale, the larger the range represented.

10. Determination of the direction on the map: in general, "up north, down south, left west, right east"; There is a map pointing to the target, and the arrow pointing to the target points to the north; Graticule map, with longitudes indicating north-south and parallels indicating east-west.

11. The density of the contour line: the denser the middle line in the same picture, the steeper the slope; The denser the isobar, the stronger the wind; The denser the isotherms, the greater the temperature difference.

12. Convex direction and topography of the contour line: the place where the contour line protrudes to the high place is the valley, and the place where the contour line protrudes to the low part is the ridge.

13. The convex direction of the contour line and the river: The contour contour convex direction is opposite to the flow direction of the river.

14. The convex direction of the isotherm and the ocean current: The convex direction of the isotherm is the same as the direction of the ocean current.