Question

What is meant by thermal expansion

Answer 1

Thermal expansion is the increase in volume of a material as its temperature is increased, usually expressed as a fractional change in dimensions per unit temperature change. ... If the material is a fluid, it is generally described in terms of a change in volume.

Answer 2

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 theaverage molecular kinetic energy of a substance. When a substance is heated, the kinetic energy of its