Question

differentiate between conduction and convection​

Answer 1

Conduction is a process in which transfer of heat takes place between objects by direct contact. Convection refers to the form of heat transfer in which energy transition occurs within the fluid. Radition is the mechanism in which heat is transmitted without any physical contact between objects.

Answer 2

Conduction :-

The transfer of heat in the direction of heat flow from one molecule to another without the actual displacement of molecules from their mean position is called conduction. Remember, molecules may vibrate at their position but never get displaced (unless change of state occurs). For example, when one end of an iron rod is heated, the other end also got heated in a short time, due to the conduction of heat.

Convection :-

The transfer of heat from higher temperature to lower temperature with the actual movement of molecules is called convection. Convection takes place only in liquids and gases. Example: When an iron box is working, we can feel warmth without touching it, from a short distance. This is due to the convection of heat by the air near to the iron box.

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