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Qingdao Edition Fourth Grade Science Volume 1	pptx	6 MB

"Evaporation" PPT

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Upload Time: 2024-09-30

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Description

"Evaporation" PPT

Part One: Concepts

Concept: The vaporization phenomenon that can occur at any temperature is called evaporation.

What factors do you think may affect the speed of evaporation?

Group cooperative learning:

Design an experimental plan and explore the factors that affect evaporation speed in groups

The higher the temperature, the faster the evaporation

The larger the surface area, the faster the evaporation

The faster the surface air moves, the faster it evaporates

"Evaporation" PPT, the second part of the content: life phenomena

Can your conclusion explain life phenomena?

How do hand dryers in hotels speed up water evaporation?

Modern water-saving agriculture often uses sprinkler irrigation and drip irrigation technologies to replace flood irrigation, saving about 50% of water. Why is this?

Experiment: Put a drop of alcohol on the back of your left hand and a drop of water on the back of your right hand

What is the conclusion of your experiment?

Different liquids evaporate at different speeds.

"Evaporation" PPT, the third part: Harvest

Learn in this lesson:

I learned……

What touches me the most is...

I found that in life...

What I'm still confused about is...

Keywords: Qingdao edition fourth grade science PPT courseware free download, evaporation PPT download, .PPT format;

For more information about the "Evaporation" PPT courseware, please click on the Evaporation PPT tab.

"Vaporization and Liquefaction" Changes in State of Matter PPT (Evaporation and Boiling in Lesson 1):

"Vaporization and Liquefaction" PPT on Changes in State of Matter (Evaporation and Boiling in Lesson 1) Part One: Preview Perception 1. Vaporization The process in which a substance changes from ________ to ________. 2. Boiling 1. Concept: liquid ________ and ________ vapor occur simultaneously..

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Update Time: 2024-09-30

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Evaporation PPT

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"Evaporation" PPT