Question

Advantage of thermal expansion of solid

Answer 1

Advantage of thermal expansion of solid:

➡when we design a jar that is closed when warmed and sealed by the greater thermal contraction of the metal cap, compared to the glass sides. This is also the reason why you run hot water over the jar to facilitate re-opening it.

The thermal expansion of a heated gas or liquid brings about convection, without which earth's surface temperature would be extremely hot in the daytime, and not especially stable.

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