Fifth Grade Science Volume 1, Textbook Edition
Science Edition for Sixth Grade Science Volume 2
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Science Edition for Sixth Grade Science Volume 1
Third Grade Science Volume 1, Textbook Edition
Fourth Grade Science Volume 2, Textbook Edition
Fourth Grade Science Volume 1, Textbook Edition
Qingdao Edition Fourth Grade Science Volume 2
Hunan Education Edition Fourth Grade Science Volume 1
E-education edition fifth grade science volume 2
E-education edition fifth grade science volume 1
Qingdao Edition Fifth Grade Science Volume 2
Fourth-grade science volume 2 of the E-education edition
Fifth Grade Science Volume 2, Textbook Edition
Zhejiang Education Edition Seventh Grade Science Volume 2
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!["Three State Changes of Water" Water Cycle in Nature PPT Courseware](http://daogebangong.oss-cn-beijing.aliyuncs.com/ppt/preview/1/afd5518c-fce7-4c0f-b244-93f25adf6fa2.webp)
Category | Format | Size |
---|---|---|
People's Education Press Sixth Grade Science Volume 1 | pptx | 6 MB |
Description
"Three State Changes of Water" Water Cycle in Nature PPT Courseware
What are the three forms of water in nature, and how do they change?
At what point does water start to freeze?
The temperature at which water freezes is the freezing point of water.
At one atmospheric pressure, the freezing point of water is 0°C.
In the cold winter, the clothes hanging in the yard will freeze quickly, but the ice does not turn into water, but the clothes dry. How is this going?
How do people use the three-state changes of water in life?
Fish freezing and preservation, sun salting, steaming steamed buns, artificial rainfall
The earth's north and south poles are covered with thick ice. At present, the temperature of the earth is gradually rising, which is accelerating the melting of ice and snow in the North and South Poles and raising sea levels. If this phenomenon continues, what will be the consequences?
Some coastal areas will be flooded, and penguins, polar bears and other polar animals will lose their homes, die or even become extinct.
1. Fill in:
1. The temperature of water when it freezes is the ____ of the water.
2. It takes ____ for ice to turn into water or water vapor.
3. Water has three states: liquid, gas, and solid. Ice is ____ state of water. Water vapor is water in the ____ state.
4. The main factor affecting the changes in the three states of water is ______________.
2. Be a good little judge:
(1) The three states of liquid, gaseous and solid water can transform into each other under certain conditions. ( )
(2) Water vapor can directly turn into ice, but ice cannot directly turn into water vapor. ( )
(3) Put a piece of ice there and it will never decrease as long as it does not turn into water. ( )
(4) Under normal circumstances, water can freeze at 0°C and below. ( )
(5) The three-state changes of water are very closely related to our lives. ( )
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For more information about the PPT courseware "Three-State Changes of Water and the Water Cycle in Nature", please click on the "Three-State Changes of Water ppt Water Cycle in Nature" ppt tag.
"Three State Changes of Water" PPT download of changes in temperature and water:
"Three State Changes of Water" Temperature and water changes PPT download Part 1: Introduction of new knowledge Do you still remember ice? Is it a solid, liquid, or gas? What about water? Now that we have solids and liquids, what is missing? Today we will learn about the three states of water...
"Three State Changes of Water" Changes in Temperature and Water PPT:
"Three State Changes of Water" Temperature and Water Changes PPT Part One: Various Forms of Water Water has various forms in nature, sometimes liquid, sometimes solid, and sometimes gaseous. Based on the phenomena we have observed and our existing life experiences, let’s talk about it...
"Three State Changes of Water" PPT courseware:
The first part of the "Three State Changes of Water" PPT courseware content: Changes in the form of water. The process of water form change and the conditions for change. Ice crystals formed when frost water vapor solidifies on objects. When the temperature drops below 0°C, water vapor turns into ice crystals at high altitudes in snow. The temperature drops below 0 ℃..
File Info
Update Time: 2024-09-08
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