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Qingdao Edition Fourth Grade Science Volume 2	pptx	6 MB

"Millet Swimming in the Water" PPT

Author: ︶￣Ｓs°╮

Upload Time: 2024-09-03

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"Millet Swimming in the Water" PPT

Part One: Thinking about Problems

1. Why do millet grains swim in water?

2. With the help of the convection movement of millet grains, we imagine how the water moves during the process of heating water?

3. Is the convection of water related to the heating of water? Why does the water in the lower part rise?

Cold water and hot water _____ flow, which causes the water to ______. This method of transferring heat is called __________.

Radiators, electric heaters, stoves, etc. transfer heat to the nearby air. When the air is heated, it will rise. The colder air around it will flow over to occupy the space due to the greater pressure of the surrounding air. The air flowing over will rise again after being heated, and the surrounding air will rise again. The air flows over to occupy this space... In this way, the air in the entire room will gradually warm as it continues to flow.

Keywords: Qingdao edition fourth grade science PPT courseware for the second volume free download, millet grain water swimming PPT download, .PPT format;

For more information about the PPT courseware "Xiaomi Li Shui Swimming", please click the Xiaomi Li Shui Swimming ppt tag.

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Update Time: 2024-09-03

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Millet swimming in water ppt

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"Millet Swimming in the Water" PPT