"Water Cycle" Water on Earth PPT courseware

Description

"Water Cycle" Water on Earth PPT courseware

Part One Content: Learning Objectives:

1. Understand the concept of water cycle and memorize the process and main links of water cycle. (emphasis)

2. Understand the geographical significance of the water cycle and guide students to establish awareness of water resources protection. (important and difficult points)

Water cycle PPT, part 2: independent preview and exploration of new knowledge

1. Process and types of water cycle

1. water cycle concept

The process of continuous movement of water in _________ through various links in the four major spheres of hydrosphere, _____sphere, lithosphere and biosphere.

2. Types and main links

[Special Reminder]

1 Internal circulation on land does not only occur in the inflow region.

2 The outflow area has both inter-sea and land circulation as well as intra-land circulation.

2. The geographical significance of the water cycle

1. Maintaining global water _____.

2. Promote the renewal of water resources

Different water bodies _____ different characteristics → determine the limited nature of water resources → water resources utilization should not _____ water body renewal speed

3． Keep shaping _____.

4． _____The main link of contact.

5. By absorbing, transforming and transmitting surface _____, it can alleviate the imbalance of ______ balance and expenditure in different latitude areas.

6． _____ and _____ that affect the world have a profound and extensive impact on the global natural environment.

[Special Reminder] Water bodies with active water cycles and close connections with other water bodies have shorter renewal cycles, while those with more active water cycles have longer renewal cycles.

(1) The water cycle is the cyclic movement that mainly occurs between the hydrosphere, atmosphere, and lithosphere. ()

(2) Antarctic glaciers do not participate in the circulation between sea and land. ()

(3) Surface runoff will eventually flow into the ocean. ()

(4) Atmospheric circulation is the main driving force for water vapor transport. ()

(5) The water cycle that the Tarim River water mainly participates in is ()

A. Cycle between sea and land B. intraterrestrial circulation

C. Marine internal circulation D. big cycle

Water cycle PPT, the third part: cooperative exploration to overcome difficult problems

Types and characteristics of water cycle

In November 2018, the German newspaper Science Illustrated published a research article showing that there is increasing evidence that the water cycle in the Amazon River Basin has intensified since the late 1990s, which has led to more frequent hydrological extreme events.

Question 1 (Regional Cognition) What are the characteristics of atmospheric precipitation in the Amazon River Basin?

Tip: Precipitation is heavy and relatively uniform throughout the year.

Question 2 (Comprehensive thinking) What kind of water cycle does the Amazon River mainly participate in?

Tip: Cycle between sea and land.

Question 3 (Comprehensive thinking) The large area of ​​tropical rainforest in the Amazon basin has been destroyed. What is the impact on its water cycle?

Tip: Transpiration weakens, surface runoff increases, infiltration decreases, etc.

[Summary]

1. Types and characteristics of water cycle

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

Type: circulation between sea and land, circulation within land, circulation within sea

Area of ​​occurrence Between the ocean and the land Between the land and the sky above the land Between the ocean and the sky above the ocean

How to distinguish types of water cycle

(1) The circles of contact are different. The intersea and continental circulation and the intraterrestrial circulation involve four circles, while the intramarital circulation does not involve the lithosphere.

(2) The fields of occurrence are different. The realm of the land-sea cycle includes both land and ocean, while the other two water cycles include only land or ocean. Water bodies in the outflow area on land participate in both internal circulation on land and circulation between sea and land.

(3) The processes and links are different. The cycle between sea and land has the most and most complete links, while the main links of the other two water cycles are evaporation and precipitation. There is no infiltration link in the internal circulation at sea.

(4) The amount of water involved is different. The amount of water participating in the internal circulation at sea is the largest, and the amount of water participating in the internal circulation on land is the smallest.

Water cycle PPT, the fourth part: Competence standards and solid foundation

1. Among the water bodies represented by letters in the figure, the most widely distributed is ()

A. a B. b

C. c　D． d

2. Among the following statements, the correct one is ()

A. Among the three states of water, solid water is the most abundant

B. There is no solid water in the tropics

C. Various water bodies on land have a mutual supply relationship with each other.

D. my country's outflow areas do not participate in the internal circulation process on land

1.A　2.C　Question 1, gaseous water has the smallest quantity but the widest distribution. Question 2: Among the three states of water, liquid water has the largest amount; there are solid glaciers on high-altitude mountains in the tropics; my country’s outflow areas participate in both inter-sea and intra-land circulation. ]

3． The main water supply source of the river is ()

A. Atmospheric precipitation B. groundwater

C. Ice and snow melt water D. lake water

4． The river may be our country’s ()

A. Pearl River B. tarim river

C. Songhua River D． Yangtze

3.C　4.B　[The runoff of this river is small and changes with temperature changes. Its water supply source should be ice and snow meltwater, which may be the Tarim River in my country. ]

Keywords: Free download of PPT courseware for high school geography compulsory course 1 of the People's Education Press, water cycle PPT download, water on earth PPT download, .PPT format;

For more information about the "Water Cycle on Earth" PPT courseware, please click on the "Water on Earth PPT Water Cycle PPT" tab.

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Update Time: 2024-11-22

This template belongs to Geography courseware People's Education Press High School Geography Compulsory Course 1 industry PPT template

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