"Climate Characteristics and Major Meteorological Disasters in my country" PPT

"Climate Characteristics and Major Meteorological Disasters in my country" PPT

Part I: Monsoon climate in eastern China:

1. my country’s monsoon climate distribution range:

Areas east and south of the Daxinganling-Yinshan-Helan Mountain-Gangdise Mountains line

2. my country’s climate types include:

Tropical monsoon climate, subtropical monsoon climate, temperate monsoon climate, temperate continental climate, plateau and alpine climate.

3. Characteristics of my country’s monsoon climate:

(1) Winter temperatures are low and precipitation is low, while summer temperatures are high and precipitation is high. Rain and heat occur in the same period. Precipitation is relatively abundant throughout the year.

(2) Winter temperatures in the south are significantly higher than in the north, with smaller annual temperature ranges and greater annual precipitation.

my country's climate characteristics and major meteorological disasters PPT, part 2: Arid climate in western my country

⑴. On the distribution map of annual precipitation in China, find areas with annual precipitation less than 400 mm (arid, semi-arid).

⑵. Why is there so little precipitation in the arid and semi-arid climate areas of western my country?

The western region is deeply inland and the southeast monsoon cannot reach these areas, so it is greatly affected by the nature of the continent.

Characteristics of arid climate in western China:

There is little precipitation throughout the year, and precipitation is concentrated in summer, with large seasonal changes; winter is cold, summer is hot, and the temperature varies from day to day. The annual temperature range is large, but the sunshine is abundant.

Pros and Cons of Dry Climate:

The temperature difference is large, the light is strong, and the light time is long, which is very beneficial to agricultural production, such as the production of cotton and fruits.

Behavioral and morphological adaptations of organisms in arid climate zones:

The thick stems of cactus are where water is stored, the leaves degenerate into needle shapes to reduce water transpiration, and the developed root system is used to fully absorb water.

Tail-bearing mustard bugs raise their buttocks on foggy nights to allow water condensed on their bodies to flow along their bodies to their mouths. This is their main method of obtaining moisture.

my country's climate characteristics and major meteorological disasters PPT, part three content: my country's disastrous weather:

1. Cold wave: It is a large-scale strong cold air activity.

Cause: Due to strong cold and high pressure activities

Hazards: Bringing severe cooling, frost, strong winds and sandy weather

2. Typhoon:

Typhoon is a very destructive disastrous weather

The radius of a typhoon is hundreds of kilometers. The center of a typhoon is called the eye of the typhoon - calm weather and few clouds;

The area with a radius of about 100 kilometers outside the eye of the typhoon is the violent storm area.

3. Flood

Causes:

Continuous heavy rains and typhoons are the main natural factors causing floods.

Some human activities can also cause floods or increase the harm of floods.

Vegetation slope protection experiment

Experiments show that vegetation can retain water and soil and increase rainwater infiltration, so destroying vegetation will increase the harm of floods. The catastrophic flood that occurred in the Yangtze River in 1998 was closely related to the serious destruction of forests in the basin.

Keywords: Zhejiang Education Edition eighth grade science PPT courseware free download, my country's climate characteristics and major meteorological disasters PPT download, .PPT format;

For more information about the "my country's Climatic Characteristics and Major Meteorological Disasters" PPT courseware, please click on the "my country's Climatic Characteristics and Major Meteorological Disasters" ppt tag.

"my country's Climatic Characteristics and Major Meteorological Disasters" PPT courseware:

"my country's Climatic Characteristics and Major Meteorological Disasters" PPT courseware Part 1: What is a cold wave? It refers to the cold air coming from high latitudes that rapidly intensifies under specific weather conditions and invades mid- to low-latitudes, causing severe cooling and massive...