"Why Wear Cotton Clothes to Keep You Warm" 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!
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"Why Wear Cotton Clothes to Keep You Warm" PPT courseware
How to use a thermometer:
1. Hold the upper end of the thermometer with your hand.
2. When reading the thermometer, keep your eyes level with the scale.
3. When the thermometer is extended into the water, the bubbles cannot touch the wall and bottom of the cup.
Experimental results
Sweaters and cotton-padded clothes do not generate heat.
Experimental requirements:
1. Pay attention to safety and do not get burned.
2. Pour the same amount of hot water (100 ml) into the two beakers for each group.
3. Cover one beaker containing hot water with your clothes, and leave the other one uncovered.
4. Music appreciation. When the music stops and starts, measure the temperature of the hot water in the two beakers at the same time, and record the temperature on the experiment record sheet.
Experimental results
Cotton-padded clothes and sweaters play the role of thermal insulation, which can not only prevent the body's existing heat from escaping, but also prevent the cold air from outside from entering.
Look for it
Where is thermal insulation used in production and life, and where is heat insulation used?
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"Why Wear Cotton Clothes to Keep You Warm" PPT Courseware 3:
"Why Wear Cotton Clothes to Keep You Warm" PPT Courseware 3 Let's talk about it. When the weather gets cold, how do the clothes we wear change? Think about it: Why do you feel warm when wearing sweaters and cotton-padded clothes? Start by guessing why, and then do some research. Experimental Exploration My Experiment 1: My Questions..
"Why Wearing Cotton Clothes Keeps You Warm" PPT Courseware 2:
"Why Wear Cotton Clothes to Keep You Warm" PPT Courseware 2 What happens to the clothes we wear when the weather gets colder? The weather is cold, why do we wear cotton clothes? The reading of the thermometer after wrapping it in cotton clothing (℃): Room temperature (℃): The correct way to use the thermometer: Hand...