Question

Explain Thermal Expansion.​

Answer 1

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Thermal expansion is the tendency of matter to change in shape, volume, and area in response to a change in temperature. Temperature is a monotonic function of the average molecular kinetic energy of a substance.

Answer 2

Answer:

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Explanation:

Thermal Expansion is the expansion in length ( linear expansion ) , expansion in volume ( cubical expansion ) and the expansion in dimensions ( superficial expansion ) of solids , liquids and gases. There are many applications of thermal expansion like :-

• Hot air balloons rise up in the air by expansion of gases

• Fitting iron rim on wheels

• Mercury expands inside the clinical thermometer when it comes in contact with a hot body.

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