Senior three geography preparation knowledge: American geography

America is divided into North America and South America, which are located on the east coast of the Pacific Ocean and the west coast of the Atlantic Ocean. The following is the preparation knowledge of geography in senior three that I collected for your study.

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Senior three geography preparation knowledge: American geography

1, American agricultural characteristics:

Modernization and regional production specialization.

2. The basic characteristics of North American topography:

Three terrain areas in the south and north columns.

Western alpine areas: mountains (Rocky Mountains, etc. ), plateaus and basins alternate, and mountains are formed by the collision of American and Pacific plates.

Central Plains: Central Plains (South-Mississippi Plain, West-Great Plains).

Eastern plateau mountainous areas: Labrador Plateau and Appalachian Mountain areas, with low terrain.

3. The reason why the temperate maritime climate on the west coast of North America is long and narrow:

The Cordillera mountain system prevents the west wind from entering.

4. The temperate continental climate in North America is widely distributed because:

North America has a large temperate continent, most of which are located in temperate regions; The western and eastern mountain systems block the influence of western Pacific water vapor and Atlantic water vapor on the inland; The middle is a plain. In summer, the warm air mass from the Gulf of Mexico goes north, and in winter, the cold air mass from the Arctic Ocean goes south. The temperature difference between winter and summer in the Central Plains is large.

5, Canada's major industrial sectors and major export products:

Main industrial sectors: mining, timber, paper making, aquatic product processing, steel.

Main export products: mineral products, newsprint, wood, water wheat, meat milk and aquatic products.

6. The Great Lakes coast of the United States is the area with the most concentrated industry and the earliest development. Briefly analyze what advantages are provided for industrial development here:

① It has a long history of development; (2) Appalachian mountains have coal, and the Great Lakes region has iron, which is rich in resources; (3) The Great Lakes, rivers and Atlantic Ocean have cheap shipping and convenient transportation; (4) Developed agriculture provides conditions.

7. Explain the natural and socio-economic conditions of the distribution of dairy farming belts:

The warm and cool temperate continental climate is not suitable for grain, but suitable for pasture growth, with concentrated urban population, broad market, convenient transportation and strong industrial base.

8. Analyze the conditions for the development of Chicago iron and steel industry:

Rich in coal and iron resources, convenient transportation, cheap water transportation, developed industry and broad market.

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Geography preparation knowledge of senior three: climate causes

The influencing factors of climate are: solar radiation, atmospheric movement, ground conditions and human activities. The formation of a particular climate is not necessarily influenced by these factors. Therefore, when examining the questions, we should pay attention to judging what the leading factors are.

(1) Solar radiation: ① The heat obtained at different latitudes is different, thus forming different temperature zones, such as tropical zone, subtropical zone, temperate zone, sub-frigid zone and frigid zone (polar zone); (2) The seasonal differences at the same latitude, coupled with the differences in thermal properties between land and sea, form a monsoon climate.

(2) Underlying surface: (1) The difference in thermal properties between land and sea forms a maritime climate and a continental climate; (2) The local difference between ground vegetation and surface properties is essentially the difference of heat and moisture, because the underlying surface is the direct heat source and water source of the atmosphere.

(3) Atmospheric circulation: ① The low-pressure area and the high-pressure area can be used as a weather system, which affects the climate of a region for a long time, such as the equatorial low-pressure area, which is hot and rainy all the year round; (2) Water vapor transport is influenced by prevailing wind belts and monsoon circulation, which further affects the climate. For example, under the monsoon circulation, there is less precipitation from land to sea in winter, and more precipitation from sea to land in summer; (3) Through the movement of pressure belt and wind belt, the climate in some areas is affected, such as the Mediterranean climate.

(4) Human activities: through production activities, the physical and biological characteristics of the underlying surface are changed, the contents of water vapor and CO2 in the atmosphere are changed, and the climate is affected. If industrial production leads to the increase of carbon dioxide, the increase of forest coverage or the construction of reservoirs, the local climate will change.