Question

Differenciate between contraction and expansion in metal
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Answer 1

Answer:

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Explanation:

Expansion:-

• The increase in the size of an object on heating is called expansion.
• An example of an expansion is an extra three rooms built onto a house.

Contraction:-

• The decrease in size of an object on cooling is called contraction.
• An example of contraction in a liquid is a thermometer.