Question

Define evaporation .state any two factors on which the rate of evaporation depends and explain how it depends on each of theme.

Answer 1

There are many factors that affect the evaporation rate. The rate of evaporation depends on the liquid's exposed surface area (faster when increased), the humidity of surroundings (slower when increased), the presence of wind (faster when increased) and the temperature (faster when increased).

Answer 2

Evaporation is the process of conversion of matter from liquid state to gaseous state.

It depends on the following factors:

- Temperature : An increase in temperature increases the kinetic energy of the molecules and thus, increases the rate of evaporation.

- Surface area : Evaporation is a surface phenomena. If a large surface area is exposed to air, the rate of evaporation increases.

- Humidity : If less moisture is present in the atmosphere, more evaporation can take place. But if excess moisture is already present, there shall be less evaporation.

- Wind speed : With an increase in the wind speed, the water molecules move away with the wind and evaporation is faster.