Multiple choice

Boiling tea, when poured into a glass, sometimes breaks the glass as _____.

  1. the glass gets heated up

  2. the glass is brittle

  3. the inner surface of the glass becomes hot and expands but outer surface does not get heated quickly

  4. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When boiling water is poured into a glass, the inner surface heats up rapidly and tries to expand. The outer surface remains cooler and doesn't expand at the same rate, creating thermal stress that can crack the glass. This is called thermal shock.

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