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Lesson 55 - Why does the liquid in a straw stay up when you cover the top?
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This week's question is about drinking straws. Have you ever put your straw in a drink, held your thumb on the top of the straw, and pulled it out of the drink? What keeps the liquid inside the straw? Why doesn't it fall out? Does this mean the liquid is defying gravity? Join us for this week's lesson to find out. It's never too late to learn about the world around you.
This is a listener question.
Resources from this episode:
If I seal a straw with my finger, the liquid stays inside. Why?
Pressures and forces on water contained in a straw when your finger seals the top
UCSB Science Line
World's Longest Straw
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Theme Song:
Swing 39 by Latché Swing
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