Evaporation is the process by which a liquid phase is changed into a gaseous phase. The use of heat energy is present in this procedure. influencing variables for evaporation Temperature: As the temperature rises, evaporation rates do as well. Because the molecules are moving more quickly at higher temperatures, it is more probable that one of them will have enough energy to separate from the liquid and turn into a gas. Wind speed: The rate of evaporation and wind speed are inversely related. The rate of evaporation rises along with the wind speed. Surface area: The rate of evaporation rises as surface area increases. Water molecules are able to absorb more heat energy from their surroundings the more surface area is exposed to air. Humidity: The relationship between humidity and rate of evaporation is inverse. The rate of evaporation rises as the humidity falls.