What is demonstrated by water moving up a straw?

A) evaporation and condensation

B) sublimation and deposition

C) cohesion and adhesion

D) precipitation and transpiration

The answer is C: water is drawn up a straw by cohesion and adhesion. Water molecules stick to one another and the walls of the straw, just like in a capillary.

Cohesion is the attractive force between like materials (between water

molecules).

Adhesion is the attractive force between twounlike materials (such as between

water and a solid container).

Capillary action is the tendency of a liquid to rise innarrow tubes or small openings as a result of adhesion and cohesion.

The liquid water molecules bind to the straw-a process known as adhesion. In the narrow space of the straw, the interaction of cohesion and adhesion causes theliquid to be drawn upward in the straw.