"China's Geographic Differences" PPT courseware

Description

"China's Geographic Differences" PPT courseware

learning target

1. Recall and summarize the distribution of geographical differences in my country.

2. Understand the geographical significance of the Qinling-Huaihe River line through map reading and comparative analysis.

3. Summarize, organize and memorize the basis for the division of my country's four major geographical regions.

Significant geographical differences

Let me summarize: (In what aspects?)

1. Natural aspects (examples)

2. Humanities (examples)

The geographical significance of the Qinling-Huaihe River line:

1. Climate

1. Qinling Mountains-Huaihe River is the boundary of the 800 mm annual precipitation line. The precipitation in the south of the Qinling Mountains and the Huaihe River is more than 800 mm; the precipitation in the north of the Qinling Mountains and the Huaihe River is less than 800 mm.

2. The length of the rainy season is different between the north and south of the Qinling Mountains-Huaihe River. The rainy season north of the Qinling Mountains and the Huaihe River is concentrated and short, mainly in July and August; the rainy season south of the Qinling Mountains and the Huaihe River is much longer.

3. The Qinling Mountains-Huaihe River is the dividing line between the humid zone and the semi-humid zone.

4. Qinling Mountains-Huaihe River is the boundary of the 0℃ isotherm in January. The average January temperature in the south of the Qinling Mountains and the Huaihe River is above 0°C, and there is basically no ice in winter; the average January temperature in the north of the Qinling Mountains and the Huaihe River is below 0°C, and it is generally frozen in the winter.

5. Qinling Mountains-Huaihe River is the dividing line between warm temperate zone and subtropical zone.

6. Qinling Mountains-Huaihe River is the dividing line between subtropical monsoon climate and temperate monsoon climate. In summer, it is hot and rainy south and north of the Qinling Mountains-Huaihe River. In winter, the south of the Qinling Mountains and the Huaihe River is mild and rainy, while the north of the Qinling Mountains and the Huaihe River is cold and dry.

7. The dividing line between north and south regions.

2. Vegetation

To the south of the Qinling Mountains and the Huaihe River is the subtropical evergreen broad-leaved forest; to the north of the Qinling Mountains and the Huaihe River is the temperate deciduous broad-leaved forest. Therefore, there is a saying that "when oranges grow in Huainan, they become tangerines, and when they grow in northern Huaibei, they become oranges."

3. River hydrology

The rivers south of the Qinling Mountains and the Huaihe River have rich flow, small seasonal changes, low sand content, long flood seasons, and no ice in winter; the rivers north of the Qinling Mountains and the Huaihe River have smaller flows, large seasonal changes, high sand contents, short flood seasons, and ice in the winter. . The Qinling Mountains-Huaihe River is also the watershed between the Yellow River and the Yangtze River.

4. Topography, soil,

1. Terrain: The area south of the Qinling Mountains and the Huaihe River is dominated by hills; the area north of the Qinling Mountains and the Huaihe River is dominated by plains and plateaus.

2. Soil: The area south of the Qinling Mountains and the Huaihe River is dominated by red soil; the area north of the Qinling Mountains and the Huaihe River is dominated by yellow soil or brown soil.

5. Agriculture

1. Types of cultivated land: The area south of the Qinling Mountains and the Huaihe River is dominated by paddy fields; the area north of the Qinling Mountains and the Huaihe River is dominated by dry land.

2. Food crops: Rice is the main area to the south of the Qinling Mountains and the Huaihe River; wheat is the main area to the north of the Qinling Mountains and the Huaihe River.

3. Oil crops: The area south of the Qinling Mountains and the Huaihe River is dominated by rapeseed; the area north of the Qinling Mountains and the Huaihe River is dominated by peanuts and soybeans.

4. Sugar crops: Sugar cane is the main area to the south of the Qinling Mountains and the Huaihe River; sugar beet is the main area to the north of the Qinling Mountains and the Huaihe River.

5. Crop ripening: two to three crops a year from the Qinling Mountains to the south of the Huaihe River; three crops every two years or one crop a year from the Qinling Mountains to the north of the Huaihe River.

Understand the division of my country's four major geographical regions

1. Observe the limit A in Figure 5.5 and compare it with the equal precipitation line in Figure 5.1:

(1) Which precipitation constant line distribution is closest to limit A?

400mm constant precipitation line

(2) What are the dominant factors considered in determining limit A?

The dominant factor in determining boundary A is the monsoon (whether it is affected by the summer monsoon)

2. Observe the limit B in Figure 5.5 and compare it with the equal precipitation line and the constant precipitation line in Figure 5.1.

January isotherm comparison:

(1) Which isotherm distribution in January is closest to limit B?

0℃ isotherm

(2) Which precipitation constant line distribution is closest to limit B?

800mm constant precipitation line

(3) What are the dominant factors considered in determining boundary B?

Temperature and precipitation factors are climate factors

(4) Is boundary B close to the Qinling-Huaihe line?

Generally consistent with the Qinling-Huaihe River line

Evaluation area

1. Qinling Mountains-Huaihe River is an important geographical dividing line in my country. It is ()

① The dividing line between subtropical and warm temperate zones ② The dividing line between semi-humid and semi-arid areas ③ The dividing line between monsoon and non-monsoon areas ④ The dividing line between deciduous broad-leaved forest and evergreen broad-leaved forest ⑤ The dividing line between paddy fields and dry land ⑥ The dividing line between pastoral and agricultural areas

A. ①②⑥ B． ②③⑤ C. ①④⑤ D. ②④⑥

2. A middle school blackboard newspaper has added a new "True or False" column, as follows, among which "true" is ()

①Northern residents mainly eat rice. ②Northern residents mainly rely on land transportation. ③Northern residents pay attention to ventilation and heat dissipation in their houses. ④Northern residents' houses have small roof slopes and thick walls.

A. ①② B． ①③ C. ②④ D. ③④

3． The following mountain ranges and terrain areas are all located in the south ( )

A. Wushan Mountains Loess Plateau B. Daxinganling Plains of the middle and lower reaches of the Yangtze River

C. Sichuan Basin Wuyishan Mountains D. Yinshan Mountains Southeast Hills

4． The areas dominated by "black soil" and "yellow soil" are ( )

A. Northern region b. southern region

C. Northwest Territories D. Qinghai-Tibet region

5. "There are many paddy fields in farmland, mainly planting rice, rapeseed, etc., with two to three crops a year" is a description of the agricultural situation in which of the following areas ( )

A.Southern region B.Northern region

C. Northwest region D. Qinghai-Tibet region

Keywords: China’s geographical differences teaching courseware, New People’s Education Edition eighth grade geography PPT courseware for the second volume, eighth grade geography slide courseware download, China’s geographical differences PPT courseware download, .ppt format

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Update Time: 2024-10-08

This template belongs to Geography courseware People's Education Edition Geography for Eighth Grade Volume 2 industry PPT template

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