Question

what is Contraction and Expansion ? give some examples.​

Answer 1

Answer:

Contraction and expansion

Explanation:

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Answer 2

Answer:

substances expand when they get warmer, and they contract when they get cooler, this property can be iseful.

for example: thermometers work because the liquid inside them expands and rises up the tube when it gets hotter

hope it helps ✌️