O-LevelPhysicsThermal Physics5054/11 · Oct/Nov 2010 · Q161 Mark
A liquid evaporates rapidly. Why does this cause it to cool?
AAir molecules remove heat by contact with the liquid surface.
BEnergy is lost by convection currents.
CSome of the most energetic molecules leave the liquid.
DThe molecules have less room to move around.
✓ Correct answer
C: Some of the most energetic molecules leave the liquid.
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