why does the water placed inside an earthen pitcher lowers its temperature after a couple of hours ????

Question

1 . the pores in the pot draw the cold inside
2 . the pores allow contact with outside ambiencewhich lowers the temperature
3 . the pores allow water molecules to move back & forth by cooling it down
4 . the pores allow water to evaporate & the heat for this is taken from the pores inside

Answer 1

It's answer number 4. The pitcher, being porous, allows water to seep through to the outside. When water evaporates it requires heat (the latent heat of vaporisation) which it takes from the pitcher. It's the same process that keeps us cool by sweating on a hot day.

Answer 2

the pores allow water to evaporate & the heat for this is taken from the pores inside

Answer 3

the pot probably maintains a lower temperature than the water, so it draws heat out of the water - but if you put the pitcher in the sun, I'm sure the opposite would happen, because the pitcher would absorb the sun's heat and transfer it to the water

Answer 4

You may notice a little moisture on the outside of the pot. That evaporates, cooling the pot and its contents.

Answer 5

4.