"Climate" China's natural environment PPT courseware 6

Description

"Climate" China's natural environment PPT courseware 6

learning target

1. Understand the distribution characteristics of winter and summer temperature and precipitation distribution in my country by reading isotherms and equal precipitation line distribution maps, and learn to analyze the causes of temperature and precipitation characteristics.

2. Understand the basis for the division of temperate zones and dry and wet regions in my country, and clarify the huge differences in my country’s geographical environment.

3. Know the main characteristics of my country’s climate and understand the impact of my country’s climate on agricultural production and people’s lives.

Read pictures and summarize

Read the temperature distribution map of January 2.13 in the textbook and complete:

1. What are the temperatures in Mohe and Hainan Island in January? What is the approximate temperature difference between the north and south of my country?

2. Find the zero degree isotherm. How does the temperature change from south to north from this line?

3. Summarize the distribution patterns of winter temperatures in my country.

4. Find out the terrain area and river that the zero degree isotherm passes through in January? In what terrain areas do you observe sudden changes in this line? Why did it change?

Comparative findings

1. Is the formation of the winter and summer temperature distribution characteristics in my country related to the terrain?

2. Why is there such a big difference in temperature between north and south in winter, but generally high temperatures in summer?

Independent exploration one

The reason for the large temperature difference between north and south in winter

High temperatures are common in summer

In winter, due to the long days (long sunshine hours) in low latitudes where the sun is high, but short days in high latitudes where the sun is low, this is an important reason for the large temperature difference between the north and south of my country in January.

In summer, due to the short days (short sunshine hours) in low latitudes where the sun is high, and long days in high latitudes where the sun is low, this is the main reason for the small temperature difference between the north and south of my country in July.

latitude factor

What other reasons lead to the large temperature difference between the north and south of my country in winter?

think

What are the differences in production and life among people in different temperature zones? (Activities on page 35 of the textbook. )

In different temperature zones, crops mature at different times. For example, in the mid-temperate zone, it can generally only be harvested once a year, in the warm temperate zone, it can be harvested three times every two years or twice a year, in the subtropical zone, it can be harvested two to three times a year, and in the tropics, it can be harvested three times a year.

In different temperature zones, the sowing time selected for the same food crop (such as wheat) is also different. Warm temperate zones are suitable for sowing wheat in autumn and harvesting winter wheat; mid-temperate zones are only suitable for sowing wheat in spring and harvesting spring wheat.

Spatial distribution of precipitation

1. Find areas with annual precipitation exceeding 1,600 mm, areas with 800-1,600 mm, and precipitation lines of 800 mm, 400 mm, and 200 mm. Briefly summarize what are the trends in the spatial distribution of precipitation in my country?

2.Where does the 800 mm precipitation line pass? Which isotherm in January is it roughly consistent with?

3. Could you please confirm the approximate annual precipitation in millimeters where the school is located?

analysis answer

1. Which precipitation line is the dividing line between humid areas and semi-humid areas roughly close to?

2. Which isoprecipitation line is the dividing line between semi-humid and semi-arid areas roughly close to?

3. Which isoprecipitation line is the dividing line between semi-arid and arid areas roughly close to?

4. Which dry and wet area is the school located in? What are the characteristics of the growing vegetation?

The climate is complex and diverse

1. Point out the main climate types and distribution in my country.

2. Summarize my country’s climate characteristics.

Topography is one of the important factors affecting climate. Our country's terrain is complex and diverse, and the terrain varies greatly, making our country's climate more complex and diverse.

think

What impact does the complex and diverse climate have on people's production and life?

The diverse climate allows most of the world's animals and plants to find suitable areas for growth in my country. Our country is extremely rich in crops and various animal and plant resources.

Under complex and diverse climate conditions, different natural landscapes and tourism resources can be formed.

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For more information about the "China's Natural Environment and Climate" PPT courseware, please click on the China's Natural Environment ppt and climate ppt tag.

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Update Time: 2024-07-06

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