第二十二课 Lesson Twenty-two 凝结 coagulation 1.物体表面的小水珠是怎么来的呢？ How do small water droplets on the surface of objects come from? 2.准备小镜子、火柴、玻璃片、小瓷盘等。 Prepare small mirrors, matches, glass pieces, small porcelain plates, etc. 3.小水珠是怎样形成的？ How do small drops of water form? 4.对着小镜子哈气会看到什么现象？ What can you see when you breathe in a small mirror? 5.将瓷盘加热后盖在子上试一试。 Heat the porcelain plate and try it on the back cover. 6.现在我们知道小水珠是怎么来的啦！ Now we know how little drops of water come from! 7.原来小水珠…… It turns out that little drops of water…… 8.水蒸气遇冷可以变成液态的水，这种现象叫做凝结。 When water vapor is cold, it can become liquid water. This phenomenon is called condensation. 9.说说生活中的凝结现象。 Talk about the condensation phenomenon in life. 10.冬季，汽车玻璃内壁上常结有小水珠，影响司机叔叔的视线，我们想办法防止它们的出现。 In winter, there are often small water droplets on the inner wall of the car glass, which affect the sight of the driver's uncle. We try to prevent them. |
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