Fifth Grade Science Volume 1, Textbook Edition
Science Edition for Sixth Grade Science Volume 2
Science Edition for Sixth Grade Science Volume 1
Third Grade Science Volume 2, Textbook Edition
Third Grade Science Volume 1, Textbook Edition
Fourth Grade Science Volume 2, Textbook Edition
Fourth Grade Science Volume 1, Textbook Edition
Fourth-grade science volume 2 of the E-education edition
Qingdao Edition Fourth Grade Science Volume 2
Hunan Education Edition Fourth Grade Science Volume 1
E-education edition fifth grade science volume 1
E-education edition fifth grade science volume 2
E-education edition sixth grade science volume 1
Fifth Grade Science Volume 2, Textbook Edition
Qingdao Edition Fourth Grade Science Volume 1
Zhejiang Education Edition Seventh Grade Science Volume 2
Category | Format | Size |
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Fourth Grade Science Volume 1, Textbook Edition | pptx | 6 MB |
Description
"Wind Direction and Wind Speed" Weather PPT
Part One: Wind Direction and Wind Vane
Wind direction refers to the direction in which the wind blows. For example, north wind blows from north to south, west wind blows from west to east, and southeast wind blows from southeast to northwest.
Wind direction can be measured using a wind vane. The arrow on a weather vane points in the direction the wind is blowing, and we use it to describe the direction of the wind.
Let's make a weather vane.
1. Choose a harder straw (or straw) and cut a gap of about 1 cm 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.
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.
Measure the wind direction with our homemade wind vane.
Choose an open place outdoors to measure the wind direction.
Get your bearings with the help of a compass.
Make it clear that the direction of the wind vane arrow is the direction in which the wind is blowing, that is, the wind direction.
Use words or arrows to record wind direction.
The direction of the arrow is the direction of the wind. When recording on paper, you should follow the principle of "up north, down south, left west, right east".
Wind direction and wind speed PPT, part 2 content: wind speed and wind speed level
Wind speed is measured in meters per second the wind travels.
An anemometer is an instrument that measures wind speed. It 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.
Feng level song
The zero-level smoke column reaches the sky; the first-level blue smoke drifts with the wind;
Level 2 light breeze blows in the face; Level 3 leaves move and red flags are displayed;
The fourth-level branches shake pieces of paper; the fifth-level small trees bend with the wind;
It is difficult to lift an umbrella at Level 6; it is difficult to walk against the wind at Level 7;
Level 8 winds caused branches to break; level 9 winds caused tiles to fly off the roof;
Level 10 uproots trees and houses; levels 11 and 2 are rare on land.
Wind direction and wind speed PPT, Part 3: How to describe wind speed
Wind speed level is measured by anemometer. How do we know the wind speed with our senses?
In order to facilitate long-term observation and recording, we can also make a wind flag.
Choose a piece of cloth, about 35 cm long and 20 cm wide; a piece of cardboard, about 40 cm long and 6 cm wide. Make a wind flag like the one in the picture. And go outside the classroom to measure the wind speed at that time.
Wind direction and wind speed are important data in weather observations. In the weather calendar, our daily observations of wind direction and wind speed are recorded.
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: 2024-10-19
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