Water in mud pot remains cools because of the
phenomenon called evaporative cooling. Mud pots by their very nature includes
number of very minute pores through which the water slowly ooze out . In
effect,these pores increase the surface area of water and consequently increase
the evaporation. For water to evaporate it requires some energy which it takes up from water itself. When the water
is left undisturbed ,the fast moving molecule of evaporated water escapes from the surface and
vanishes into the air .As a result of
this the mean kinetic energy or the temperature of the water is lowered in
water.
INTERESTING FACT:The
water in the pot is much colder in summer than in any other season because the
temperature outside the pot is more so the vaporization and hence the water is
colder.
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