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Why Does The Straw Suck A Drink?

Time:2022-08-31 Views:51
The earth is surrounded by a thick layer of air, called the atmosphere. Where there is air, there is atmospheric pressure. Put the straw in the cup, there is air inside and outside the straw, are subjecttous to the same pressure in the atmosphere.

As soon as we suck the straw, the air inside the straw is sucked away, and the water pressure in the straw is less than the pressure outside the straw. In this way, the atmospheric pressure will put the drink into the straw, so that the water inside the straw rise, the drink into the mouth.

Disposable paper straws

 paper straw
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