In an earthen pitcher, the water remains cold due to the process of

The process of heat transfer from one point to another in a fluid due to the differences in fluid density is called:

In cold weather, aquatic animals survive even when water at the top layer of the lake freezes into ice because –

The sunlight from the sun reaches to earth in

Which one of the following regarding density of water at atmospheric pressure is correct ?

A fan produces a feeling of comfort during the hot weather because