Skills of answering geography questions in college entrance examination ....

Hello, the idea of high school geography answer is this:

Sunshine factors affecting construction period

1。 The days are long; 2。 Terrain (high altitude, early sunrise and sunset, long sunshine time); 3。 Weather conditions.

Two factors, the intensity of solar radiation (that is, the influence of the atmosphere on the weakening of solar radiation)

For example, the place with the strongest solar radiation on the Qinghai-Tibet Plateau?

At (1) low latitude, the solar altitude angle is large; 2 sunny days; ③ High altitude areas; The air is thin and clean.

1 factors affect the temperature level. Latitude; 2。 Topography Topography III. Characteristics of underlying surface (land and ocean location, vegetation, ocean current, etc. );

4。 Weather conditions.

, influencing factors and changes, annual average temperature

1。 Low latitude and small latitude, high latitude and large area;

2。 Nature of underlying surface: ocean is smaller than land, smaller than inland, coastal and bare vegetation;

3。 Weather conditions: Cloudy and rainy.

Five river regulation measures

Upstream: the principle of flood control is to build reservoirs and plant trees;

Flood in the middle reaches, flood storage principles, reservoir construction and flood storage projects;

Downstream: The principle of harnessing spillway beam water is to reinforce dikes, dredge rivers and excavate rivers.

Cause analysis of flood

Natural causes (mainly considered from three aspects: water characteristics, hydrological characteristics and climate characteristics)—

Man-made reasons (mainly from vegetation destruction and land restoration).

For example, the causes of the Yangtze River flood:

(a) caused by natural causes:

1。 Characteristics of water system:

(1) wide river tributaries;

(2) Vegetation destruction in the middle and upper reaches is very serious, and sediment concentration increases;

/& gt； (3) The middle and lower reaches are mostly plains, with curved rivers, slow water flow and poor water quality.

2。 Hydrological characteristics: the wet area flowing through is abundant in rainfall, the main stream has a long flood season and sufficient in water.

3。 Climatic characteristics: In some years, abnormal climate and heavy rain caused floods in the basin.

(b) manpower reasons:

1。 Deforestation, destruction of vegetation, protection of water resources, regulation of runoff, reducing the ability to make up for drought, sediment into the river, silting up the river bed, reducing the flood discharge capacity of the river.

2。 Reclamation and lake siltation lead to lake shrinkage, and the ability of regulating flood peak decreases.

1。 Sun height (latitude) 2. Weather conditions; 3。 Topography; 4。 Air density.

Reasons for enriching river hydrological analysis

Mainly from two aspects:

The first is the velocity (located in the step transition area, the river drops sharply);

The amount of runoff (sediment, basin area, evaporation).

(A) the conditions for the formation of ice flood

The formation of ice flood must meet two conditions:

The first is the ice age, and the second is the moving high-latitude globe. In China, the most serious ice flood of the Yellow River mainly occurs in the upper and lower reaches (Shandong section).

(B) the application of diving water level line

Determine the flow direction of the diving isobar from the high water level, the low water level is vertical, and the flow direction is diving.

Slope of groundwater level (hydraulic slope of groundwater level): phreatic flow, in order to determine the difference of water level, take two points, and the actual distance between the two points is divided by the flow, that is, the slope of groundwater level.

Diving depth: the waterline intersects with the contour line of this point, and the height difference between them is the diving depth. If you ask whether the website is the intersection of horizontal contours, you can use interpolation method to calculate the elevation of groundwater level and the buried depth of groundwater.

The relationship between diving and surface water: diving on the basis of determining the flow.

Reasonable layout, using hydrological wells and drains to dive into wells and drain water to the maximum extent, and generally laying wells and waterways along the water.

(3) Take measures to solve the problem of water shortage, mainly in two aspects: increasing revenue and reducing expenditure; protecting limited water resources and preventing water pollution; Develop water resources, improve water supply capacity, strengthen water resources management, save water, improve water use efficiency, enhance awareness, and control water demand growth and population growth.

8 Influencing factors of snow line height (snow line refers to the altitude of existing ice and snow)

There are two main factors: first, the isotherm height is 0 (precipitation, that is, the influence factor of precipitation on the windward slope), and second, the snow line on the southern slope of the Himalayas is lower than that on the northern slope.

Note: judge the characteristics of windward slope or leeward slope.

Influence of vertical band spectrum factors in mountainous areas

Latitude of the first mountain (the higher the latitude, the simpler the band spectrum); Mountain elevation (Vietnam's high frequency spectrum may be more complicated). In addition, the influence of altitude depends on the heat of the same spectrum (that is, sunlight and shady slopes).

10, where the satellite launch base is located.

Natural factors (weather conditions require clear weather, and the initial speed of earth rotation depends on latitude and topography); Human factors (vast territory, sparsely populated, convenient transportation, meeting the needs of national defense and national security).

XI。 Dig a tunnel

Two problems should be paid attention to when digging a tunnel: first, leakage; The problem of collapse. The anticline is selected for tunnel excavation because the groundwater in the anticline rocks fluctuates upward and penetrates to both sides, which is not easy to leak; Anticline and dome structure, not easy to collapse.

12。 Location of reservoir dam

Mainly consider the following three aspects: 1. Choose the outlet of narrow rivers or basins and depressions (because of small quantities and high project cost) 2. Choose a place with good geological conditions, try to avoid faults and prevent karst-induced reservoir earthquakes; 3。 Considering the area? Relocation, minimize flooding of fertile fields, towns and villages.

Hope to adopt, thank you!