"Wind direction and wind speed" weather PPT download

Description

"Wind direction and wind speed" weather PPT download

Part One: Introduction of New Course

What's the answer?

wind

Do you think you can hear or see the wind? Can you describe the wind using any words you can think of to describe the wind?

Can hear the wind. Can't see the wind,

The wind is cold, fast and icy

How do you know the existence of wind?

Make the flowers grow. Blowing leaves and weed leaves. Blow the hat off.

Wind direction and wind speed PPT, part 2: wind direction and wind vane

What is the direction of the wind?

Wind direction refers to the direction in which the wind blows

North wind wind blowing from north to south

east wind wind blowing from east to west

Southeast wind Wind blowing from southeast to northwest

Wind direction measuring tool: wind vane.

What does the weather vane arrow point to?

It's the direction the wind is blowing from. We use it to describe direction.

How do we make a weathervane?

Wind direction and wind speed PPT, the third part: wind speed and wind speed grade

What is wind speed?

Wind speed is how many meters the wind travels per second.

Wind speed measuring instrument: anemometer.

An anemometer has 3 to 4 wind cups, connected to a spoke similar to a bicycle wheel. When the wind blows, the spoke drives the middle axle to rotate, and the speed indicator installed on the axle displays the wind speed.

Wind direction and wind speed PPT, Part 4: How to describe wind speed

How do we know the speed of wind using our senses?

In our weather calendar, wind speeds can be divided into simplified wind speed classes.

In order to facilitate long-term observation and recording, we can also make a wind flag.

How to make a wind flag?

Materials: a piece of cloth (about 35 cm long and 20 cm wide), a piece of cardboard (about 40 cm long and 6 cm wide), and a stapler.

Production steps:

(1) Fold the cardboard in half, place the cloth into the cardboard aligned with the crease, and close the cardboard.

(2) Use a stapler to staple the cardboard firmly.

Wind direction and wind speed PPT, Part 5: Classroom exercises

1. Fill in the blanks

1. Meteorologists record wind speed as ___________ levels.

2. Anemometer is an instrument of ___________.

3. The west wind is the wind that blows from _______ to _______, and the southeast wind is the wind that blows from _______ to _______.

4.The unit of wind speed is _______.

2. Judgment questions

1. You can feel the wind blowing on your face, the leaves are rustling, and the wind vane is moving at level 3. ( )

2. The wind is invisible, so the strength of the wind cannot be judged. ( )

3. Anemometer, it has 3~4 wind cups ( )

4. Wind has size and direction. ( )

3. Multiple choice questions

1. When using simplified wind speed grades to divide wind speed, strong winds are represented by numbers ( ).

A 1 B 2 C 3

2. When the wind speed reaches at least ( ), it is difficult for us to hold an umbrella while walking.

A Level 6 B Level 5 C Level 4

4. Short answer questions

1. How do we make a weather vane?

Production steps: 1. Choose a harder straw (or wheat straw) and cut a 1cm gap lengthwise at both ends of the straw.

2. Use cardboard to cut an arrow of moderate size and a slightly larger wing. Insert the gaps at both ends of the straw and secure them.

3. Insert a pin through the balance point of the straw and into the eraser on one end of the pencil so that it can rotate freely.

2. How to make a wind flag?

Materials: a piece of cloth (about 35 cm long and 20 cm wide), a piece of cardboard (about 40 cm long and 6 cm wide), and a stapler.

(1) Fold the cardboard in half, place the cloth into the cardboard aligned with the crease, and close the cardboard.

(2) Use a stapler to staple the cardboard firmly.

Keywords: free download of Chinese PPT courseware for the first volume of the fourth grade of the textbook version, download of wind direction and wind speed PPT, download of weather PPT, .PPT format;

For more information about the "Weather, Wind Direction and Wind Speed" PPT courseware, please click on the "Weather ppt Wind Direction and Wind Speed ​​ppt" tab.

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Update Time: 2024-11-22

This template belongs to science courseware Fourth Grade Science Volume 1, Textbook Edition industry PPT template

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