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

The surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. Why?

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

A glass bottle containing water tightly corked breaks when it is kept in freezer, because -

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

In winter you touch a log of wood and a rod of iron, you will feel rod of iron is colder because –