"What will the weather be like tomorrow" PPT courseware 2

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"What will the weather be like tomorrow" PPT courseware 2

do you know?

How do you usually know what the weather will be like tomorrow?

Commonly used methods to know tomorrow’s weather include: obtaining weather forecast information by watching TV, listening to the radio, dialing the weather forecast phone number, checking on the Internet, etc.; predicting the weather yourself by analyzing weather maps; making weather forecasts by yourself through meteorological observations.

Forecast etc.

discuss

Below is today's weather forecast. Do you know what these weather forecast terms mean? What weather elements are included?

Lishui will be cloudy to overcast tomorrow, with light rain at times, the probability of precipitation is 15%, the relative humidity is 85%, the southerly wind is level 3 to 4, and the temperature is 12℃-30℃.

Do you know what these weather forecast terms mean?

⑴ "Overcast" means the total cloud cover in the sky is above 8/10,

"Cloudy" means that the total cloud cover in the sky is between 5/10 and 7/10, 5/10 to 3/10 means few clouds, and below 3/10 means sunny.

⑵Precipitation less than 5 mm within 12 hours is considered light rain.

5-15 mm is considered moderate rain, and greater than 15 mm is considered heavy rain.

Precipitation probability indicates the likelihood of precipitation.

⑶How to express the minimum temperature and maximum temperature.

Weather map: Used to represent weather conditions. It is a map that can show meteorological information in different places.

⑴Isobaric lines: lines connecting places where air pressures are equal.

The isobars are closed, and the central air pressure value is higher than the surrounding air pressure area, which is a high pressure area;

The isobars are closed, and the central air pressure value is lower than the surrounding area, which is a low pressure area.

According to the distribution characteristics of isobars, common weather systems can be analyzed, such as high-pressure systems, cold fronts, etc.

⑵Front is an important weather system that affects the weather. The interface between cold and warm air is called a front.

Isobars

1. High-pressure system: Closed isobars with higher pressure toward the center form a high-pressure system.

Under high pressure control, the weather is fine

2. Low-pressure system: Closed isobars with lower pressure toward the center form a low-pressure system.

Under low pressure control, the weather is cloudy and rainy

do you know?

1. Please try to explain these proverbs using the knowledge you have learned.

Spiders add silk and the sky clears up.

The ants are moving in and it will be rainy.

Carp are jumping on the river surface, heavy rain is coming.

2. Can you still name some proverbs about the weather?

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Update Time: 2024-11-22

This template belongs to science courseware E-education edition fourth grade science volume 1 industry PPT template

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