"Water Cycle Process and Geographic Significance" Natural Geographic Elements and Phenomenon PPT

Description

"Water Cycle Process and Geographic Significance" Natural Geographic Elements and Phenomenon PPT

Part One: Strengthening the Implementation of Basic Knowledge

[Self-reading textbook·Fill in key points]

1. Water cycle

1. concept

Water in nature undergoes a continuous process of change among various water bodies through _____, plant transpiration, _____, condensation precipitation, _____ and runoff.

2. type

According to the spatial scope of occurrence, it is divided into _____, intraterrestrial circulation and ________.

[Special Reminder]

(1) Terrestrial internal circulation does not only occur in the inflow area.

(2) The outflow area has both inter-sea and intra-land circulation.

(3) The ocean participates in both internal circulation at sea and circulation between sea and land.

(4) All three water cycle types include evaporation and precipitation links.

(5) Human activities mainly penetrate through the transformation of the surface, which includes both favorable and unfavorable aspects:

① Advantages: In agricultural production activities, including converting sloping land into terraces, plowing soil, and planting trees, the amount of infiltration can be increased.

② Disadvantages: Mainly due to deforestation, overgrazing and other behaviors that destroy surface vegetation, reducing water infiltration.

4． Cause

2. The geographical significance of the water cycle

1. Continuously renew terrestrial water resources to maintain global water _____.

2. Perform energy exchange and _____.

3. Shape _____.

Water cycle process and geographical significance PPT, part 2 content: Pay attention to problem-based teaching

Question exploration: How to understand the process of water cycle and its geographical significance? Important and difficult test points

[Thinking and exploring]

The "Western China Economic Development Report" points out that in order to achieve sustainable development in western my country, we must focus on developing new water sources. The first is to use new technologies to develop water sources, simulate "artificial mountains" in severely drought areas, and artificially increase rain (snow). The second is to develop rainwater harvesting projects. A large number of small and micro water storage projects such as rainwater cellars, pools, water tanks, and ponds have been built in more than ten provinces and regions in the central and western regions. This not only solves the problem of drinking water for some people, but also provides water sources for farmland to fight drought, improving water resource utilization.

[Problem Design]

1. Analyze from the perspective of "regional cognition" why a large number of rainwater cellars and pools are built in more than ten provinces and regions in central and western my country?

Tip: Some areas in central and western my country are located in the interior of the continent, with less precipitation and cannot meet people's production and domestic water needs.

2. Use "comprehensive thinking" to analyze which link of the water cycle is mainly affected by the development of rainwater harvesting projects? What are the main beneficial impacts of this project?

Tip: Mainly affects surface runoff. The beneficial impacts are mainly on conserving water sources, regulating the time distribution of water resources, and ensuring people's production and life.

[System Cognition]

1. The process and geographical significance of the water cycle

The three types of water cycle have their own characteristics and different meanings. The specific differences are shown in the following table:

2. The impact of human activities on the water cycle

[Training to pass the test]

The picture below is a schematic diagram of the water cycle between the Earth's spheres. Read the picture and answer questions 1-2.

1. The water cycle links represented by ①②③④ are ()

A. Evaporation, Transpiration, Precipitation, Runoff

B． Transpiration, evaporation, precipitation, runoff

C． Precipitation, Transpiration, Evaporation, Runoff

D． evaporation precipitation transpiration runoff

2. Among the following water cycle links, the one most affected by human activities is ()

A. ①B. ②

C． ③D. ④

Analysis: Question 1, ① When the annular water enters the atmosphere from the lithosphere, biosphere, and hydrosphere, it should be evaporation; ② When the annular water enters the atmosphere from the biosphere, it should be transpiration; ③ When the annular water enters the lithosphere, biosphere, and The hydrosphere should be precipitation; ④The link water enters the hydrosphere from the lithosphere and should be runoff. Question 2: Human activities mainly affect surface runoff in the water cycle.

3. Which of the following statements about the water cycle is correct ()

① It can alleviate the imbalance of heat budget at different latitudes. ② It is the main link between the sea and the land. ③ It cannot shape the surface morphology. ④ It cannot absorb and transform solar radiation.

A. ①② B． ③④

C． ②③ D. ①④

4． The water cycle links represented by ①②③④ in the figure are ()

A. Infiltration, surface runoff, evaporation, underground runoff

B． Evaporation, underground runoff, infiltration, surface runoff

C． Surface runoff, evaporation, infiltration, underground runoff

D． Evaporation, surface runoff, infiltration, underground runoff

Water cycle process and geographical significance PPT, the third part of the content: Carry out structural evaluation of thinking

Structural evaluation of thinking—analyzing the impact of human activities on the water cycle from the "viewing the sea model"

Since the term "sea view mode" appeared, it has attracted much attention. On June 7, 2019, heavy rains hit Nanning, Guangxi. The heavy rainfall caused a large amount of water to accumulate in some blocks of Nanning. Nanning first started the "sea viewing mode" in 2019. Faced with the increasingly common "viewing the sea model", how should we solve it?

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Update Time: 2024-07-25

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