Question

what is tharmal expansion​

Answer 1

Answer:

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. 

Explanation:

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Answer 2

Answer:

Hi

Explanation:

Tharmal expansion,the general increase in the volume of a material as its temparature is increased.It is usually expressed as a fractional change in length or volume per unit temparature change;a linear expansion coefficient is usually employed in describing the expansion of a solid, while a volume expansion coefficient is more useful for a liquid or a gas.If a crystalline solid is isometric (had the same structural configuration throughout),the expansion will be uniform in all dimensions of the crystal.If it is not isometric,there may be different expansion coefficients for different crystallographic directions,and the crystal will change shape as the temperature changes.

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