"The Secret of the Water" PPT download

Description

Qingdao version third grade science volume 1, the secret of the water surface PPT download

Part One: Have you ever played Little Water Drop?

Have you ever played with water droplets?

1. How to put small drops of water on your fingertips?

2. How can you observe when small water droplets drip onto leaves? What was observed?

3. Can you use bamboo skewers to separate the small water droplets on the leaves?

If you use a dropper to drip water on a coin, please guess how many drops of water the coin can hold?

Notice:

lay the coin flat

Gently pinch the glue tip and drop it close to the coin

Observe changes in the water surface

Remember the number of drops before the water overflows the coin.

The secret of the water surface PPT, part 2: thinking

think:

1. Observe what the water looks like before it overflows?

2. Why can a small coin hold so much water?

Please guess, if I add paper clips to this cup of water, how many paper clips will the cup overflow?

Notice

1. Note that the water must be full.

2. When adding paper clips to the water, you must be gentle and your hands must not touch the water.

3. Students in the group must pay attention to cooperating with each other, counting the number of paper clips, and the group leader records it.

The secret of the water surface PPT, part three: surface tension of water

surface tension of water

Water is composed of many water molecules. The water molecules on the surface of the water are close together and have a mutual attraction force. This is the surface tension of water.

Keywords: Free download of Qingdao version of science PPT courseware for third grade volume 1, Secret of the Water Surface PPT courseware, .PPT format;

For more information about the "Secret of the Water Surface" PPT courseware, please click on the "Secret of the Water Surface" PPT tab.

"The Secret of the Water" PPT courseware:

Qingdao version of third-grade science volume 1, the secret of the water surface PPT courseware, the first part of the content: riddle riddle You can't grab it with both hands, you can't split it with a knife, you have to ask it to do laundry and cooking. Let's observe the water surface in each group's vessel and the water in the paper cup...

"The Secret of the Water" PPT:

Qingdao version of third-grade science volume 1, the secret of the water surface PPT, the first part of the content: Content introduction Bottle swallowing needle 1. Move gently when putting the clip back, do not shake the table, and avoid spilling the water. 2. Count as you put it. The number before the water flows out is the maximum amount that the bottle can swallow.

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Update Time: 2024-10-05

This template belongs to science courseware Qingdao Edition Third Grade Science Volume 1 industry PPT template

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