Liquid rising in a thermometer as temperature increases and it is an example of

Answer;

-Thermal expansion

Explanation;

Thermal expansion is the tendency of matter to change in shape, area, and volume in response to a change in temperature.

It is a fractional change in size of a material in response to a change in temperature. This includes…

-changes in length compared to original length (Δℓ/ℓ0) called linear expansion

-changes in area compared to original area (ΔA/A0) called areal expansion or superficial expansion

-changes in volume compared to original volume (ΔV/V0) called volumetric expansion or cubical expansion.

For most materials, over small temperature ranges, these fractional changes are directly proportional to temperature change (ΔT) and have the same sign, they are also higher for liquids than solids.