Question

evaporative cooling: why do people get cooled down when they sweat? rapidly. t or

Explanation:

Sweat is mostly water. When sweat evaporates from the skin surface, it changes from liquid to gas. This phase change (evaporation) requires energy, which is taken as heat from the skin. So the skin (and the body) loses heat, leading to a cooling effect.

Answer:

People get cooled when they sweat because the evaporation of sweat from the skin surface is an endothermic process (requires heat energy). The heat energy needed for sweat to evaporate is drawn from the body (skin), thus lowering the body's temperature and creating a cooling sensation.