"Water Cycle in Nature" Water Cycle in Nature PPT Courseware Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!
| 文件名 如何下载使用 | 下载次数 | Download Points | 下载地址 |
|---|---|---|---|
| "Water Cycle in Nature"... | 22000次 | 0.00 | Free Download |
Tips: If you open the template and feel that it is not suitable for all your needs, you can search for related content "Water Cycle in Nature" Water Cycle in Nature PPT Courseware is enough.
How to use the Windows system template
Directly decompress the file and use it with office or wps
How to use the Mac system template
Directly decompress the file and use it Office or wps can be used
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view: Click to see
How to create a high-quality technological sense PPT? 4 ways to share the bottom of the box
Notice
Do not download in WeChat, Zhihu, QQ, built-in browsers, please use mobile browsers to download! If you are a mobile phone user, please download it on your computer!
1. The manuscript PPT is only for study and reference, please delete it 24 hours after downloading.
2. If the resource involves your legitimate rights and interests, delete it immediately.
3. Contact information: service@daogebangong.com
"Water Cycle in Nature" Water Cycle in Nature PPT Courseware, due to usage restrictions, it is only for personal study and reference use. For commercial use, please go to the relevant official website for authorization.
(Personal non-commercial use refers to the use of this font to complete the display of personal works, including but not limited to the design of personal papers, resumes, etc.)
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view:Please click to see
Authoritative PPT Summary
"Water Cycle in Nature" Water Cycle in Nature PPT Courseware
Question: What state of water do they belong to?
Fog, clouds, rain, dew, frost, snow, hail
How are clouds and fog formed?
Why is there rain and snow?
The cause of fog: At night, because there is no sunlight, the earth dissipates heat quickly. In the morning, the temperature near the ground is relatively low. At this time, if there is more water vapor in the air, it will condense into many small water droplets when it is cold, gather together, and float in the low altitude. This is fog.
Causes of cloud formation: Water vapor enters the atmosphere from the earth's surface and gradually rises to high altitudes. Due to the low atmospheric temperature at high altitudes, the water vapor in the air condenses into small water droplets or small ice crystals, which gather together to form clouds.
Similarities and differences in the causes of clouds and fog
Clouds and fog are similar in that they are both processes in which water vapor liquefies into small water droplets when cooled.
The difference between the formation of clouds and fog: clouds form at high altitudes, and fog forms at low altitudes.
What impact do clouds and fog have on human life?
Clouds: Affect light and form rain, snow and hail. Observe changes in clouds to predict weather.
Fog: affects traffic and human health.
Why does it rain and snow?
What are the characteristics of the weather before it rains? Guess: What does this indicate about the formation of rain?
What phenomenon in life is similar to rain?
Running water on the steamer, tiles or mirror in the bathroom
How would you design an experiment to test your hypothesis? Can you create a "rainfall" phenomenon using the materials below?
Simulation test:
The cause of rain: small water droplets or small ice crystals in the clouds gather more and more and get bigger. When the clouds cannot support them, they fall. During the falling process, when the low air temperature is above 0℃, what falls is rain. .
The cause of snow: small water droplets or small ice crystals in the clouds gather more and more, and get bigger. When the clouds are too big to hold them, they fall. During the landing process, when the low air temperature is below 0℃, what falls is snow. .
What impact do rain and snow have on human life?
Rain is the main source of rivers and lakes. But too much rain can lead to floods, and too little can lead to drought.
Snow has insecticidal and thermal insulation effects on plants, but it affects traffic.
The scientific principle of artificial rainfall: Based on the characteristics of clouds and the principle that rain and snow are formed by condensation of water vapor, aircraft, rockets, etc. are used to spray refrigerant into the clouds in the sky, so that the water vapor in the sky quickly condenses into water droplets. , causing the small water droplets in the clouds to increase and become larger, thus forming rain or snow.
water cycle in nature
Thinking: It rains and snows every year, why can’t all the water in the sky fall?
Discussion: Based on the knowledge of the three-state changes of water and the causes of clouds, fog, rain and snow, think about how water circulates in nature?
Please use simple drawings, simple words and arrows to show how water circulates in nature.
Expand and extend:
1. What are the causes of frost, dew and hail and their impact on human life?
Frost: Water vapor in the air near the ground condenses into small ice crystals that adhere to the ground and plants. Freezing disaster.
Dew: Water vapor in the air near the ground liquefies into small water droplets on plants when cooled. Providing water to plants in water-scarce areas
Hail: Hail is formed by the accumulation of small water droplets and small ice crystals in clouds when they are cold. It often causes mechanical damage and is a disaster.
2. How to survive in the desert? What to do when there is no water?
1. Dig a hole 10cm deep and 30cm in diameter
2. Place a clean plastic cup in the center of the hole
3. Cover the hole with a piece of clean plastic film and secure it with stones.
4. Make a small hole in the center of the film
5. Waiting for water
Keywords: water cycle teaching courseware in nature, water cycle teaching courseware in nature, PPT courseware download for the sixth grade in the first volume of the People's Education Edition, science slide courseware download for sixth grade, water cycle in nature PPT courseware download, water in nature Download the cycle PPT courseware in .PPT format;
For more information about the "Water Cycle in Nature" PPT courseware, please click on the "Water Cycle in Nature ppt" Water Cycle in Nature ppt tag.