"River" China's natural environment PPT courseware 4

"River" China's natural environment PPT courseware 4

learning target

1. Know, remember and apply it to the map: the Yangtze River’s origin, where it empties into the sea, where it flows, its length, main tributary lakes, cities at the boundaries of river sections, and major cities along the main stream.

2. Be able to analyze the role of the Yangtze River as a "treasure house of water energy" and a "golden waterway", and initially explore the directions and measures for the development and utilization of each section of the Yangtze River.

3. Understand the reasons for frequent flood disasters in the middle and lower reaches of the Yangtze River, and explore solutions to flood disasters.

Self-study guidance

Complete pre-class exercises 1, 2, 3, and 4 in exercise book P32-33;

1. Origin, injection into the ocean, full length

Provincial administrative regions through which the main stream flows

11 provinces: Qinghai, Tibet, Sichuan, Yunnan, Chongqing, Hubei, Hunan, Jiangxi, Anhui, Jiangsu and Shanghai

The Yangtze River is divided into three sections: the upper reaches from the source to Hubei Province, the middle reaches from ________ to Jiangxi Province, and the lower reaches from Jiangxi Province to the estuary.

Read text P46-49 and solve the following questions

(1) Why is the Yangtze River called the "treasure house of water energy"? Which section of the Yangtze River has the richest water energy?

(2) Why is the Yangtze River called the “golden waterway”?

(3) What are the worries about the Yangtze River? How to govern?

Classroom training

1. "Song of the Yangtze River" contains the lyrics "You come from the snow-capped mountains, the spring tide is your style; you run towards the East China Sea, the stormy waves are your spirit." What basic characteristics of the Yangtze River can you understand from these lyrics? ( )

① The terrain of the origin is high ② The amount of water rises in spring

③Flows eastward into the East China Sea ④There are many tributaries

A.①②③ B.①②④ C.①③④ D.②③④

2. Which statement about the Yangtze River is wrong ( )

A. The Yangtze River is the river with the largest drainage area and water volume in my country.

B. The Yangtze River is my country’s “golden waterway” and its transportation volume ranks first among all rivers.

C. The Yangtze River is the river with the largest water energy reserves in my country

D. The Yangtze River is the river with the longest freezing period in my country

3. Which of the topographic areas that the main stream of the Yangtze River flows through is correctly arranged in order ()

①The plains of the middle and lower reaches of the Yangtze River ②The Qinghai-Tibet Plateau

③Sichuan Basin ④Hengduan Mountains

A.②③④① B.②④③①

C.②④①③ D.④②③①

4. In recent years, floods in the Yangtze River have occurred frequently, and the main natural causes are ()

①Creating land from lakes in the middle reaches

②The terrain in the middle and lower reaches is low and flat

③There is abundant precipitation in the basin

④ Deforestation in the upper and middle reaches destroys vegetation

⑤There are many tributaries, and the rising water in the rainy season is concentrated.

A.①②③B.②③④C.②③⑤D.①③⑤

Quiz questions:

1. The Yangtze River originates from the ________ mountains of the ________ Plateau and flows into ________, with a total length of ________ kilometers.

2. The Yangtze River flows through the four terrain areas of _______________ in sequence

3. The main stream of the Yangtze River is the upper reaches from ________ in Hubei, and the lower reaches are from ________ in Jiangxi.

4. Most of the Yangtze River is located in the ________ ice-free period

5. After the founding of the People’s Republic of China, the state focused on controlling the ________ of the Yangtze River due to its numerous shoals and rapid currents and the ________ of the “nine winding ileum”.

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