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Ravindra
Newbie ![]() Joined: 03Feb2007 Online Status: Offline Posts: 1 |
![]() ![]() ![]() Posted: 03Feb2007 at 3:51pm |
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Mehul
Newbie ![]() Joined: 03Feb2007 Online Status: Offline Posts: 1 |
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Evaporation is a surface effect. The temperature of a body of water
represents an AVERAGE value of the kinetic energy of the water molecules in the water. Some of those molecules have a "higher than average" kinetic energy and break free of the surface to become water vapor. As this happens over time, the remaining body of water becomes slightly cooler (as water molecules with higher kinetic energy have "left"). That is why sweat evaporating from your body provides a mechanism to cool you off. |
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