Question

what is the difference between expansion and contraction give examples for each ?​

Answer 1

Answer:

The increase in the size of an object on heating is called expansion whereas, the decrease in size of an object on cooling is called contraction. 2. An example of an expansion is an extra three rooms built onto a house whereas, An example of contraction in a liquid is a thermometer.

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Answer 2

Answer:

Expansion

• The term "expansion" refers to an object's rise in size as a result of being heated.
• When a substance is heated, it expands in volume. Expansion is the process through which an object expands when heated.

• In concrete and steel, an expansion joint is used.

Contraction

• The contraction of an object occurs when it shrinks as it cools.

• A substance reduces in size as it cools. Contraction is the process through which an object contracts as it cools.

• When there are many concrete placements, a construction joint occurs.