(a) What is evapo

(a) The process of a liquid changing into vapour (or gas) even its boiling point is called evaporation.

Factors affecting Evaporation:

1). Temperature

2). Surface area

3). Humidity

4). Wind speed

(c) The cooling caused by evaporation is based on the fact that when a liquid evaporates, it takes the latent heat of vaporization from surroundings which it touches. By losing heat, the surroundings get cooled.