"End of Chapter Review and Evaluation" Earth's Surface Form PPT

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"End of Chapter Review and Evaluation" Earth's Surface Form PPT

1. From the textbook - a systematic inventory of knowledge in this chapter

2. Go to life - analysis and application of hot issues

Hot spots (1) Distribution of karst landforms in my country

[Broaden your horizons]

"Southern China Karst" is China's world natural heritage. It was included in UNESCO's "World Heritage List" in 2007 and was added in 2014. It is now composed of Yunnan Stone Forest, Guizhou Libo, Chongqing Wulong, Guangxi Guilin, Guizhou It consists of the karst landforms of Shibing, Jinfoshan in Chongqing and Huanjiang in Guangxi. The karst landform in southern China covers an area of ​​50,000 square kilometers, accounting for 55% of the entire karst area in China. It shows a karst landform ranging from humid tropical to subtropical areas.

[Open your mind]

1. What are the main distribution areas of karst in southern China?

Tips: Yunnan Province, Guizhou Province, Guangxi Zhuang Autonomous Region, Chongqing City and other provinces and regions.

2. Are China's karst landforms only found in the south?

Hint: No. Limestone is distributed in different areas in almost every province and region in China, and China's karst landforms are widely distributed.

Hotspot (2) The formation and types of karst landforms

[Broaden your horizons]

Karst landform is a general term for surface and underground landforms formed by the dissolution of soluble rocks by surface water and groundwater. South China's karst contains the most representative karst landforms from plateaus to lowland plains, reflecting a complete and unique karst evolution process while displaying the most spectacular and diverse karst landscapes in the world.

[Open your mind]

1. What are the conditions for the formation of karst landforms?

Tip: Solubility and water permeability of rock, mobility and dissolution power of water.

2. What are the types of karst landforms?

Tips: Karst dissolution landforms and karst sedimentation landforms.

Hot Spot (3) Development and Utilization of Karst Landforms

[Broaden your horizons]

There are many karst attractions in southern China, with a large area and a wide area. They not only present the aesthetic value of nature to the world, but also witness the evolution of the earth. The successful application of the second phase of karst in southern China as a World Heritage Site will help the world deepen their understanding of China's uniqueness. certain natural resource endowments, and strengthen public awareness of the protection of natural resources, especially special heritage resources.

[Open your mind]

1. What are the development and utilization values ​​of karst in southern China?

Tip: Karst caves are good places for groundwater movement and storage. Caves can be used as underground reservoirs for power generation and irrigation; karst springs have abundant water and good water quality, which is suitable for irrigation and drinking, and are easy to develop and utilize; karst mineral springs and hot springs are rich in beneficial The elements and gases in the karst area are of great medical value; the mineral resources in the karst area are relatively rich; the strange peaks and caves, the light and dark rivers, and the clear karst springs in the karst area are good tourism resources.

2. What are the negative aspects of karst in southern China for production and life?

Tips: In some areas, the surface water is seriously short of water due to karst development; karst caves cause leakage in dam areas and reservoir areas; water inflow occurs during mining or tunnel excavation; karst groundwater levels drop rapidly, causing ground collapse; roadbed or railway buildings In case of flooding from underground karst springs, etc.

Keywords: Hunan Education Edition High School Geography Compulsory Course 1 PPT courseware free download, end-of-chapter review and assessment PPT download, earth surface form PPT download, .PPT format;

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Update Time: 2024-09-27

This template belongs to Geography courseware Hunan Education Edition High School Geography Compulsory Course I industry PPT template

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