Question

Evaporation causes cooling. Justify this statement by citing a suitable example.

Answer 1

• During evaporation, the water molecules vibrate and move quickly that they escape into the atmosphere as water vapours.
• The water molecules take the heat of the object with them from which they evaporate.
• This heat is stored in the form of latent heat in the water molecule.
• This results in lowering the temperature of the object and causes cooling.
• For example: As the temperature rises, your body begins to produce sweat. As the sweat evaporates, it carries some of your body heat and cools down your body, thus lowering your body temperature.