It undergoes three types of expansions.
- Linear or Longitudinal expansions
- Areal or Superficial expansions
- Cubical or Volumetric expansions
Linear expansion in solid
The increase in the length is proportional to the rise in temperature, original length, and material type.
Areal expansion in solid
In the case of areal expansion, the change in area is directly proportional to the original area and the change in temperature due to heating.