"Where Do Water Drops Come From" Changes in Temperature and Water PPT Courseware 2

Description

"Where Do Water Drops Come From" Changes in Temperature and Water PPT Courseware 2

Think about it and guess:

Where do the small water droplets on the outer wall of the ice glass come from?

It might have seeped out of the cup.

Experiment 1 requirements:

(1) Wipe the cup (2) Observe carefully, the time is 1 minute (3) Make records and fill in the experiment record sheet.

Experiment 2 requirements:

(1) Wipe the cup (2) Add water and be careful not to overflow the cup. If it accidentally pours outside, wipe the outside with a paper towel. (3) Observe carefully, the time is 2 minutes. (3) Make records and fill in the experiment record sheet.

Experiment three requirements:

(1) Wipe the cup (2) Add ice. Be sure the height of the ice does not exceed the water cup, and handle it gently so as not to break the cup. (3) Observe carefully, the time is 3 minutes. (3) Make records and fill in the experiment record sheet.

Where did the little water droplets come from?

(1) What changes in the air?

(2) Is there water vapor in the air?

(3) Where does water vapor come from?

(4) Can water vapor turn into small water droplets?

(5) What causes the state of water vapor to change?

2. Is the formation of water droplets related to ice?

Experiment: Take three identical glasses, one of which is filled with tap water, one with nothing, and the other with ice, placed quietly on the table. Observe every few minutes to see if there are any water droplets on the outer wall of the glass.

Take a guess

Maybe it seeped out from the cup wall.

Maybe it's because the ice melted into water and spilled out from the mouth of the cup.

Maybe the ice cubes hit the rim of the glass and turned into water when adding ice.

Expand and extend

The living phenomenon of forming small water droplets

Small drops of water on the bathroom roof

Dew drops on petals on plant leaves in the morning

Small water droplets on the pot lid when cooking

Water drops on the wrapping paper of summer popsicles

Small water droplets appearing on windows in cold weather

Classwork

1. Fill in the blanks

When water vapor is cooled it condenses into ______. Water vapor in the air comes from ____________________.

2. Short answer

There are many small water droplets on the outer wall of a glass filled with crushed ice. Where do these small water droplets come from?

Answer: There is a lot of water vapor in the air. The glass filled with ice cools down the water vapor in the air around it, so it condenses into small water droplets on the wall of the glass.

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"Where Do Water Drops Come From" Changes in Temperature and Water PPT:

"Where Do Water Drops Come From" PPT on Changes in Temperature and Water Part One: Introduction of New Knowledge Guess what will appear on the surface of fruit after you take it out of the refrigerator and leave it for a while? Many small water droplets will appear on the surface! A glass filled with ice is left in the air. After a while...

"Where Do Water Drops Come From?" Changes in Temperature and Water PPT Courseware 3:

"Where Do Water Drops Come From" Temperature and Water Changes PPT Courseware 3 Think about it and guess: Where do the small water droplets on the outer wall of the ice glass come from? It might have seeped out of the cup. The ice melted into water and overflowed from the mouth of the cup. It may be that when adding ice, the ice cubes touched...

"Where Do Water Drops Come From" PPT courseware on changes in temperature and water:

"Where Water Drops Come From" Temperature and Water Changes PPT Courseware Knowledge Explanation I took out a popsicle from the freezer. After a while, I found a layer of white frost on the popsicle paper. When I peeled off the paper, white smoke came out around the popsicle. Put the popsicle in the cup. After a while, the ice melted and the outer wall of the cup was sweating.

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Update Time: 2024-09-30

This template belongs to science courseware Third Grade Science Volume 2, Textbook Edition industry PPT template

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