"Wind and Precipitation" PPT

Description

"Wind and Precipitation" PPT

Part One: Take a guess

Three autumn leaves have fallen,

Can bloom February flowers.

Thousand-foot waves across the river,

Thousands of poles are inserted into the bamboo at an angle.

——"Wind" Li Qiao

think about it

Can the wind pour out of Feng Po's pocket?

How is wind formed?

Just like water flows from high to low, wind flows from areas of high pressure to areas of low pressure.

Wind and precipitation PPT, part 2 content: two elements of wind

wind direction the direction the wind is blowing

Wind speed is the distance air moves per unit time

Thoughts and Discussions

Is there any way to judge the wind direction in daily life?

wind direction

Meteorological observation: using a wind vane to measure wind direction

wind speed

Unit: meters/second, kilometers/hour

Measuring Tool: Anemometer

Wind and precipitation PPT, part 3 content: Classroom reflections

Thought 1

Based on your own experience, please think about the relationship between humidity and human comfort.

If the relative humidity is too low, the human body will feel dry and prone to peeling and chapped skin;

If the relative humidity is too high, it will feel cold in autumn and winter, and sultry in summer;

The most suitable humidity for the human body is 60%-70%

Thought 2

Please explain the following proverb

Swallows fly low and it's going to rain

The snake comes out of the hole and the rain pours

If the chickens return to the cage early, the weather will be fine; if the chickens return to the cage late, heavy rain will come.

Wind and precipitation PPT, part 4: rainfall

Water droplets or ice crystals falling at different times, at different latitudes, and at different heights, when they fall to the ground, continue to melt due to rising temperatures. If they are completely melted, they become rain; if they are not completely melted, they fall to the ground as hail or snow.

rainfall

The amount of rainfall is expressed as rainfall amount

Tools: rain gauge

Measurement process:

collect rainwater

Pour into rain measuring cup

Reading the scale is the amount of rainfall

(Ice and snow are measured in the same way after melting)

Wind and precipitation PPT, part 5: activities

Ask each group of representatives to choose a day to make a weather forecast based on the weather forecast data in Hangzhou.

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

For more information about the "Wind and Precipitation" PPT courseware, please click on the Wind and Precipitation PPT tab.

"Wind and Precipitation" PPT download:

"Wind and Precipitation" PPT download part one: How is wind formed? (Note: Air flow in the vertical direction does not belong to wind) Wind is the horizontal movement of air. Wind is caused by the difference in air pressure at the same horizontal height. Caused by wind flowing from areas of high pressure..

"Wind and Precipitation" PPT courseware:

"Wind and Precipitation" PPT courseware Part One: Thinking and Discussion: How to prove that there is water vapor in the air? 1. When you open the refrigerator, fog will appear. 2. The drink just taken out of the refrigerator will start to sweat after a while if left in the air. Anytime, anywhere...

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Update Time: 2024-11-22

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

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