Why are we able to sip hot tea or milk faster from a saucer than a cup? 

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2 Answers

A liquid has a larger surface area in a saucer than in a cup. Thus, it evaporates faster and cools faster in a saucer than in a cup. For this reason, we are able to sip hot tea or milk faster from a saucer than a cup. 

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In a saucer, the exposed surface area of tea or milk is greater as compared to the cup. Therefore, the evaporation is faster and it is easier to sip colder tea or milk.

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