Question

describe thermal expansion on heating and contraction on cooling
​

Answer 1

Answer:

Heating makes the particles (that form the material) expand or become loose. Cooling makes the particles (that form the material) contract or become tight.

Explanation:

please mark me as brainliest

Answer 2

Answer:

Some materials expand on heating and some contract on cooling. Heating makes the particles (that form the material) expand or become loose. Cooling makes the particles (that form the material) contract or become tight. The amount of expansion differs in solids, liquids, and gases.