"Changeable Weather" Weather and Climate PPT Courseware 3

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"Changeable Weather" Weather and Climate PPT Courseware 3

1. Weather and its effects

1. The concept and characteristics of weather, and the difference between weather and climate.

Weather - reflects the cloudy, sunny, windy and rainy, hot and cold conditions of a place in a short period of time.

Weather characteristics:

⑴Weather reflects the atmospheric conditions of a place in a short period of time, and it changes frequently.

⑵At the same time, the weather in different places may vary greatly.

Concept: ______, ______, ______, etc. weather conditions in a region in a short period of time.

The average weather conditions in an area ______.

Characteristics Change from time to time Little change

Connection Both refer to the conditions of the atmosphere, with climate being a combination of long-term weather conditions.

2. The influence of weather

weather and military

In the 13th year of Jian'an in the Eastern Han Dynasty (AD 208), during the Battle of Chibi, Zhuge Liang predicted that there would be a southeasterly wind based on the weather changes at that time, and jointly formulated a battle plan with Zhou Yu to use the southeasterly wind and fire to attack Cao Cao's fleet, with great results. A total victory.

2. What will the weather be like tomorrow?

Cloudy or sunny refers to the number of clouds in the sky.

Temperature refers to how hot or cold the atmosphere is.

Wind force refers to the strength of the wind.

Wind direction refers to the direction in which the wind is blowing.

Precipitation probability: Precipitation probability indicates the probability of precipitation. A precipitation probability of 100% means there will definitely be rain, and a precipitation probability of 0 means there will definitely be no rain. Therefore, when the precipitation probability is between 10% and 20%, the possibility of precipitation is very small; when the precipitation probability is between 30% and 50%, there is a chance of precipitation; when the precipitation probability is between 60% and 70%, the possibility of precipitation is relatively high. ; When the probability of precipitation is greater than or equal to 80%, the possibility of precipitation is very high.

3. We need clean air

1. The quality of air is related to the ___________ contained in the air, which can be expressed by _______.

2. Fresh air - pollution index ( ) - good for human health

Dirty air - pollution index ( ) - is harmful to human health.

3. Understand the air quality level chart in the lower left corner of page 51.

Activities: Group discussion and completion of 52 pages of activity questions.

feedback exercise

1. The outstanding characteristics of weather phenomena are ( )

A. Stable B. Changeable

C. Shows as cold and heat D. Shows as wind and rain process

2. "A cold wave will affect this city in the next two days, with the temperature dropping by 8℃-10℃. Citizens are reminded to add more clothes to prevent colds." This information is ( )

A Forecast the climate B Explain the relationship between weather and transportation

C Explain the relationship between weather and agriculture D Explain the relationship between weather and life

3. When watching the weather forecast, if you see the satellite cloud image of the plain area in the middle and lower reaches of the Yangtze River is green, then the area at this time is ( )

A Sunny weather B Cloudy weather

C rainy weather D typhoon weather

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For more information about the "Changeable Weather Weather and Climate" PPT courseware, please click on the "Changeable Weather ppt Weather and Climate ppt" tab.

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Update Time: 2024-10-03

This template belongs to Geography courseware People's Education Edition Geography for Grade 7 Volume 1 industry PPT template

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