Question

Explain Thermal Expansion !​

Answer 1

Answer:

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. ... The kinetic energy of the molecules of a substance increases when the substance is heated.

Answer 2

Explain Thermal Expansion?

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If the temperature increases, then the volume of the material also increases. This is known as thermal expansion. 

Thermal expansion is the tendency of matter to change in shape, volume, and area in response to a change in temperature.The degree of expansion divided by the change in temperature is called the material's coefficient of thermal expansion. It is found to generally vary with temperature.