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A student fills a paper cup with water and puts in a freezer overnight. When she takes the cup out the next day, she notices that the sides of the cup are pushed out. Why did this happen?
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A student fills a paper cup with water and puts in a freezer overnight. When she takes the cup out the next day, she notices that the sides of the cup are pushed out. Why did this happen?

User Jintian DENG
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2 Answers

4 votes

Because when water freezes it is less dense so it expands.

User Terry Dactyl
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8.3k points
5 votes
When water is frozen, it expands. 
User Yashwant Kumar Sahu
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7.9k points
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