"Where did the water on the clothes go?" PPT courseware

Description

"Where did the water on the clothes go?" PPT courseware

Take a guess

What will happen to the word "water" written when dipped in water?

Take a guess:

Dry wet clothes in the sun and they will dry after a while!

Where did the water on the clothes go?

A experiment

Experimental equipment: wet rag, experiment report sheet

Experimental steps:

1. Place the prepared equipment on the experimental table.

2 Wipe the tabletop with a damp rag.

3. Observe any changes in the water stains on the wiped tabletop? Where did the water go?

4. Pay attention to observation and keep records.

B experiment

Experimental equipment: hair dryer, wet plate, experiment report sheet

Experimental steps:

1 Place the prepared equipment on the experimental table

2 Fill a plate with a small amount of water and use a hair dryer to blow onto the wet plate.

3. While blowing, observe what happens to the water in the plate.

4. Pay attention to observation and keep records.

Experimental requirements

(1) Please do not sprinkle water indiscriminately and pay attention to the safe use of electricity.

(2) The leader of each group leads the group members to conduct experiments together, observe the experiments carefully, communicate and discuss with the group members, and fill out the experiment report form.

(3) After the experiment is completed, the leader of each group must report the results of the experiment report sheet.

Characteristics of evaporation:

1. Vaporization phenomenon that only occurs on the surface of liquid.

2. Occurs at any temperature.

1. Fans make you feel cool in the summer. This is because [ ]

A. The wind blowing from the fan is cool

B. The wind blew away the heat from my body

C. The wind blown by the fan can speed up the evaporation of sweat and accelerate the absorption of heat from the human body.

D. Fans can lower the air temperature

2. When swimming in summer, you don’t feel cold in the water, but you feel cold when you get on the shore. This is because [ ]

A. The temperature of water is high and the temperature of air is low

B. Air conducts heat more easily than water

C. The evaporation of water on the surface of the human body absorbs heat

D. None of the above is correct

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For more information about the "Where did the water on the clothes go?" PPT courseware, please click on the "Where did the water on the clothes go?" PPT tag.

"Where did the water on the clothes go?" PPT courseware 3:

"Where did the water on the clothes go?" PPT courseware 3 1. Teaching materials "Where did the water on the clothes go?" is the content of the second volume of the third grade "Science" published by Hubei Education Press in 2015. This lesson allows students to conduct scientific research in actual situations by creating scenarios...

"Where did the water on the clothes go?" PPT courseware 2:

"Where did the water on the clothes go?" PPT courseware 2 1. What materials are clothes made of? 2. What are the characteristics of various clothing materials? 3. When drying clothes, where does the water on the clothes go? How will it change if you dip it in water and write the word "water" on the table? Wet suit...

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Update Time: 2024-10-02

This template belongs to science courseware E-education edition third grade science volume 2 industry PPT template

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