Question

what is thermal expansion​

Answer 1

Explanation:

In physics, thermal expansion is the likelihood of matter to change in volume in response to a change in temperature. When a substance is heated, its basicparticles move around more quickly and by doing so generally maintain a greater average separation

Mark as BRAINLIST and Thanxxx

Answer 2

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. 

HOPE IT WILL HELP YOU

PLEASE MARK ME AS BRAINLIEST AND FOLLOW ME.