Boiling water in a pan is a good example of convection because___.

A. The warm water rises and the cooler water sinks.

B. The water is touching the bottom of the pan, but not the heat source.

C. Boiling water can cook hard boiled eggs.

D. Boiling water is an example of radiation and not convection.

Boiling water in a pan is a good example of convection because the warm water rises and the cooler water sinks.

Answer : Option A

Explanation:

The process in which a liquid is heated to transfer thermal energy to the liquid in the form of heat is called as convection. For example, when water is boiled in a vessel at a certain temperature which is a good example of convection, the warm water rises and the cold water sinks because liquid above a hot surface expands and then the liquid rises.

Convection means that hotter and less dense fluids have a tendency to rise while colder and more dense fluids sink.

The answer would be (A)

Hot water is denser than cold water and so hot water will be above the cold water.

:D