LearningCausesv1

Evaporation cools a wet surface

The fastest molecules escape first and lower the average energy left behind.

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Output
A drier surface at a lower temperature than before evaporation
Input
Liquid water spread across a warm surface with moving dry air
Relationship

What connects the input and output?

Some surface molecules have enough kinetic energy to enter the air as vapour. Their departure removes above-average energy from the remaining liquid and surface.

Sources

1
  1. www.weather.gov: Evaporation cools a wet surfacewww.weather.gov

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