Question

List few applications of contraction and expansion of metals in the real life.

Answer 1

Answer:

railway track is the answer .

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Answer 2

Answer:

Applications of Expansion and Contraction:

Expansion by heating can be used in several everyday activities. 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.