| Category | Format | Size |
|---|---|---|
| Third Grade Science Volume 2, Textbook Edition | pptx | 6 MB |
"Water and Water Vapor" Temperature and water changes PPT courseware
Description
"Water and Water Vapor" Temperature and water changes PPT courseware
Experimental steps:
1. Take two identical stainless steel long-handled spoons and add equal amounts of water to both.
2. The water in one spoon is not heated; the other one is heated by placing it over the candle flame.
3. Observe the changes in the water: The water in which spoon evaporates faster?
What new discoveries were made during the heating of water?
Experimental requirements:
1. Work in groups of four. The group leader is responsible for heating. The other students observe carefully and communicate softly.
2. The recorder records all the phenomena seen by the students.
3. Pay attention to safety, especially when using fire or scalding spoons, and keep your eyes as far away from the water as possible.
4. Do the experiment only once. When the experiment is over, extinguish the candle and put the materials away.
Under what conditions does water turn into water vapor?
Under what circumstances does it evaporate faster?
The higher the temperature, the faster water evaporates.
When the wind blows, water evaporates quickly.
The drier the air, the easier it is for water to evaporate.
reward:
The process of turning water into water vapor is called evaporation
Heating can speed up water evaporation
The process of water vapor turning into water when cooled is called condensation
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For more information about the "Temperature and Water Changes Water and Water Vapor" PPT courseware, please click on the Temperature and Water Changes PPT Water and Water Vapor PPT tab.
"Water and Water Vapor" Changes in Temperature and Water PPT:
"Water and Water Vapor" Temperature and water changes PPT Part 1: Introduction of new knowledge Where does the water on the wall of the cup come from? There will be some puddles on the ground after it rains. The weather cleared up and the water in the puddles dried up quickly. Where did the water in the puddle go? Water seeps into the soil...
"Water and Water Vapor" Changes in Temperature and Water PPT Courseware 3:
"Water and Water Vapor" Changes in Temperature and Water PPT Courseware 3 After it rains, there will be some puddles (stagnant water) on the ground. The weather cleared up and the water in the puddles dried up quickly. Where did the water in the puddle go? 1. The process of turning water into water vapor is called evaporation. Due to water vapor...
"Water and Water Vapor" Changes in Temperature and Water PPT Courseware 2:
"Water and Water Vapor" Temperature and water changes PPT courseware 2 Observing water vapor Experiment requirements: Place the container of water on the table and carefully observe the characteristics of water vapor. Group members can discuss with each other. Tips: You can observe by smelling, looking, touching, etc..
File Info
Update Time: 2024-07-02
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