Question

how does evaporation cause cooling

Answer 1

In simple, when the liquid turns into gas it needs heat to evaporate. ... As the faster-moving molecules escape, the remaining molecules have lower average kinetic energy, and the temperature of the liquid decreases. This phenomenon is also called evaporative cooling. This is why evaporating sweat cools the human body.

Answer 2

When a substance evaporates from a surface, it absorbs heat from the surface and change into vapour state. So, the particle of liquid absorbs energy from the surface and the absorption of heat from makes the surface cool.