Question

${\blue{\bold{What\:is\:thermal\:expansion}}}$​

Answer 1

Explanation:

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

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Answer 2

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

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