"Wind and Precipitation" PPT download

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"Wind and Precipitation" PPT download

Part 1: How is wind formed?

(Note: Air flow in the vertical direction is not considered wind)

Wind is the horizontal movement of air.

Wind is caused by differences in air pressure at the same level.

Wind flows from areas of high pressure to areas of low pressure.

heat island effect

In the hot summer heat wave, when analyzing the temperature distribution in cities and urban suburbs, an obvious high-temperature area appears in the urban area. It is not difficult to find that the temperature in the city is obviously higher than the temperature in the surrounding suburbs. Meteorologically, it is called "Urban Heat Island".

A said: The city is so hot, the wind must be blowing from the city to the suburbs

B said: Based on the air pressure analysis, the wind should blow from the suburbs to the city.

Wind and precipitation PPT, part 2 content: Discussion:

1. In meteorological observation, is the wind direction pointed by the arrow of the wind vane, or is it pointed by the tail of the arrow?

The wind direction is the direction the wind vane arrow points.

2. In daily life, what other methods can we use to judge the direction of the wind?

The direction of the flag, the direction of the smoke, the direction of the leaves, etc.

Are they oriented in the same direction as the wind?

The swing direction is opposite to the wind direction

Wind and precipitation PPT, part 3: The impact of wind on humans and animals

Discussion: Wind has a great impact on human life. Which animal behaviors are also related to wind?

Before a big storm comes, camels in the desert will show fear and refuse to walk;

When there is strong wind, some flying animals cannot take off easily.

Wind and precipitation PPT, part 4 content: thinking:

1. What beneficial things can the wind do for us?

Wind is a resource that can be used to generate electricity, sail boats, exercise, pollen flowers, bring moisture or dryness, etc.

2. What hazards do strong winds often cause?

Strong winds can cause harm to humans and animals, such as blowing down buildings, damaging crops, forming storm surges, capsizing ships, etc.

Keywords: Zhejiang Education Edition eighth grade science PPT courseware free download, wind and precipitation PPT download, .PPT format;

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Update Time: 2024-06-26

This template belongs to science courseware Zhejiang Education Edition Eighth Grade Science Volume 1 industry PPT template

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