"Natural Disasters" China's Natural Environment PPT Courseware 5

Description

"Natural Disasters" China's Natural Environment PPT Courseware 5

natural disaster concept

Abnormal changes in the natural environment often occur, some of which can cause damage to resources, property losses, casualties and other hazards. Such abnormal changes are called natural disasters.

Common natural disasters

Meteorological disasters: drought, floods, typhoons, cold waves and other disasters.

Geological disasters: landslides, debris flows, earthquakes and other disasters.

Natural disasters occur frequently in my country

Our country is one of the countries with the most frequent natural disasters in the world; it is also one of the countries that suffers the most serious natural disasters in the world.

Disaster Prevention and Mitigation

Natural disasters often occur, and disaster prevention and mitigation work is particularly important. Our country has always attached great importance to disaster prevention and reduction in many aspects and has made great achievements.

Our country uses technologies such as remote sensing satellites to more accurately predict disasters such as typhoons and cold waves. The picture shows a satellite cloud image of tropical storms in the eastern seas of my country.

In order to prevent natural disasters, our country has built a large number of disaster prevention projects. The picture shows the protective forest built in the northern region to prevent wind and sand disasters.

Evaluation area

1. Which of the following phenomena is not a natural disaster ( )

A. Cold wave B. Earthquake C. Flood D. Car accident

2. Which of the following phenomena are meteorological disasters ( )

A. Earthquake B. Landslide C. Typhoon D. Debris flow

3. Which statement about natural disasters is incorrect ( )

A. Floods are common in the Jianghuai region of my country in spring and summer

B． After a drought occurs in one place, other natural disasters will not occur again

C． An earthquake is the shaking or collapse of buildings above ground

D． Different natural disasters sometimes occur consecutively

4． Which of the following statements is correct ( )

A. Mountainous areas are areas prone to geological disasters in my country

B. The main reason for frequent droughts and floods in my country is the instability of winter monsoons

C. The southeastern coastal areas are drought-prone areas in my country.

D. The second step in my country’s topography is the area prone to debris flows.

6． Read the graphic materials and answer the following questions.

Information 1: On May 12, 2008, an earthquake of magnitude 8 or above occurred near Wenchuan County, Aba Tibetan and Qiang Autonomous Prefecture, Sichuan Province, China (90 kilometers west-northwest of Chengdu, the capital of Sichuan Province), causing damage to an area of ​​more than 100,000 square kilometers. As of 10:00 on May 25, 2009, a total of 69,227 people had been killed, 374,643 injured, 17,923 missing, and direct economic losses reached 845.1 billion yuan. This is the earthquake with the greatest impact since the founding of the People's Republic of China.

Data 2: "Distribution of major meteorological disasters in China" and "Distribution of major geological disasters in China" are as follows:

(1) Read and summarize the pictures and complete the following table:

(2) Use "△" to mark the location of Wenchuan in the "Distribution of Major Geological Hazards in China" map, and analyze the reasons for frequent earthquakes in this area based on the knowledge you have learned.

Wenchuan is located near the junction of the Eurasian plate and the Indian Ocean plate, with active crust and frequent earthquakes.

(3) What should we do if an earthquake occurs during class?

When an earthquake occurs, if the classroom is on the first floor, it should be evacuated to the open ground outdoors in an orderly manner; if the classroom is upstairs, you should hide under a strong table or in a corner when shaking, and use school bags, cushions, etc. to protect it. head, and then quickly and orderly evacuated the building.

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Update Time: 2024-07-31

This template belongs to Geography courseware People's Education Edition Geography for Grade 8 Volume 1 industry PPT template

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