Concept:Sweating cools the body because evaporation absorbs the latent heat of vaporization from the skin.
Explanation:When sweat (liquid water) spreads on the skin, it evaporates into water vapor.
Evaporation is a phase change from liquid to gas.
This change requires heat energy called the latent heat of vaporization.
The needed heat is drawn from the skin itself.
This removal of heat from the skin produces a cooling effect.
The surrounding air's movement (convection) speeds up evaporation, enhancing the cooling.
Answer:B. Evaporation requires latent heat
