"Changeable Weather" Weather and Climate PPT Courseware 2

Description

"Changeable Weather" Weather and Climate PPT Courseware 2

Discussion: Summarize the characteristics and concepts of weather in terms of time and changes.

The past few days have been as warm as summer. Yesterday morning, the weather suddenly turned cold, and the sky was filled with lead-colored clouds; the difference and relationship between weather and climate

At noon, the biting cold wind started blowing and kept blowing all afternoon; at dusk, when the wind stopped, it started to rain.

The difference and connection between weather and climate

1. Weather

1. The concept of weather:

Weather refers to the atmospheric conditions of cloudy, sunny, windy and rainy, hot and cold, etc. in a place in a short period of time. It changes all the time.

──Weather characteristics ①: short time

2. How to describe:

Can you describe the weather conditions today?

——Using cloudy and sunny, windy and rainy, hot and cold to describe

──Weather characteristics ②: The weather is different in the same place at different times

──Weather characteristics ③: Different places at the same time have different weather

discuss:

1. Which of the following words describe the weather?

Overcast to cloudy, warm in winter and cool in summer, clear skies

Autumn brings crisp air, gentle breeze and drizzle, and year-round high temperature

Winter rain, summer dryness, thunder and lightning

2. Can you tell us about the weather conditions today?

Overcast to cloudy, warm in winter and cool in summer, clear skies

Autumn brings crisp air, gentle breeze and drizzle, and year-round high temperature

Winter rain, summer dryness, thunder and lightning

3. What do the other ones describe?

climate

4. Carefully understand, what are the differences and connections between climate and weather?

2. Climate

1. The concept of climate: refers to the average atmospheric conditions in a place for many years.

The two main elements of climate: temperature and precipitation

Climate characteristics: ① long time ② little change

weather forecast

Weather forecast refers to the forecast issued by meteorological observatories and weather stations on changes in atmospheric conditions such as cloudiness and sunshine, wind and rain, cold and heat, wind force, etc., as well as disastrous weather such as typhoons and cold waves. It allows us to know in advance the weather changes in the next day or two. This is very important for people's daily life and production.

Pay attention and observe

What does a weather forecast mainly cover?

1. Learn to read the weather forecast

Precipitation probability indicates the likelihood of precipitation. A precipitation probability of 100% means there will definitely be rain; a precipitation probability of 0 means there will definitely be no rain; a precipitation probability greater than 50% means there is a greater possibility of rain; a precipitation probability less than 50% means there is a small chance of rain

There are often clouds in the sky. When the sky is full of clouds, it is a "cloudy day"; when the sky is cloudless or with few clouds, it is a "sunny day".

Wind direction is the direction from which the wind comes, which can be divided into "east, west, north, south" and "southeast, northeast, southwest and northwest". A north wind direction means the wind is coming from the north. Wind strength refers to the strength of the wind and is divided into 18 levels. The larger the level, the stronger the wind.

Temperature is how warm or cold the atmosphere is. The unit of temperature is generally expressed in ℃, which is read as degrees Celsius.

2. How will the weather be tomorrow?

1. The production process of weather forecast:

A. Each weather station conducts meteorological observations at the same time and obtains meteorological information in accordance with the world's unified observation standards.

B. Receive various meteorological data sent by meteorological satellites through satellite ground stations

C. Use electronic computers to process the continuous meteorological information data to produce various weather charts.

D. Weather forecasters are like doctors consulting, analyzing and judging various weather charts and drawing forecast conclusions.

Three: We need clean air

1. The quality of air is related to the ____________ contained in the air and can be expressed by ________.

2. Fresh air, with a pollution index of __, is beneficial to human health; dirty air, with a pollution index of __, is harmful to human health.

Air quality is a new concern in weather forecasting in recent years. The level of air quality is related to the amount of pollutants in the air and can be expressed by the pollution index.

my gains

1. Precipitation probability indicates the possibility of precipitation. A precipitation probability of 100% means certainty ( ); a precipitation probability of 0 means certainty ( ).

2. On the satellite cloud map, green represents ( ), blue represents ( ), white represents ( ), the whiter the white, represents ( ), and the following is generally ( ).

3. The outstanding characteristics of weather phenomena are ( )

A. Stable B. Changeable

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

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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: 2024-09-06

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

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