Question

give two applications of expansion and contraction of materials...​

Answer 1

Answer:

Applications of Expansion and Contraction

The jammed metal lid of a jam jar can be opened by heating. The jar is inverted and just the lid is dipped in hot water. ... The fact that materials expand on heating is used in thermometers. In many thermometers, mercury is used

Answer 2

Applications of Expansion and Contraction:

The jammed metal lid of a jam jar can be opened by heating. The jar is inverted and just the lid is dipped in hot water. After some time, the lid can be opened easily as the lid gets slightly expanded. The fact that materials expand on heating is used in thermometers.

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