Question

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

Answer 1

We are able to sip hot tea or milk faster from a saucer than from a cup because saucer has a larger surface area due to the larger surface area of saucer, the evaporation of hot tea or milk from the Saucer is faster.

And this faster evaporation cools the hot tea or milk more quickly making it convenient for us to drink it.

The cooling caused by evaporation is based on the fact that when a liquid evaporates it draws or takes the latent heat of vaporization from anything which it touches.

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Hope this will help you......

Answer 2

Answer:

If the hot tea (or milk) is taken in a cup, then due to the narrow shape of the cup, the surface area of hot tea (or milk) in the cup is comparatively small. Because of small surface area, the evaporation of hot tea (or milk) taken in the cup is slow, cooling caused by evaporation is less, and hence the hot tea (or milk) remains appreciably hot for a much longer time, making it difficult to sip. On the other hand, saucer has a large surface area. Due to the large surface area of hot tea (or milk) taken in the saucer, the evaporation of hot tea (or milk) from the saucer is faster. The faster evaporation cools the hot tea (or milk) much more quickly making it convenient to sip (or drink).