Matter in Our Surroundings — Question 5

During summer we perspire more. During evaporation of sweat the particles at the surface gain energy from the surroundings or body surface and change into vapour. The heat energy equal to the latent heat of vaporization is absorbed leaving the body cool. Cotton being a good absorber of water helps in absorbing the sweat and exposing it to the atmosphere for easy evaporation. Hence, one should wear cotton clothes in summer.