Which one of the following processes does not occur during the convective transfer of heat within a container of air?
A)The volume of a warmed part of the air is reduced and its density increases.
B)A continuous flow of warmer and cooler parts of air is established.
C)The flow of air molecules results in a flow of heat.
D)The cooler portion of the air surrounding a warmer part exerts a buoyant force on it.
E)As the warmer part of the air moves,it is replaced by cooler air that is subsequently warmed.

Question

Quizplus · Accepted Answer

The reduction of volume and increase of density of a warmed part of air occurs during adiabatic heating, which is a process that occurs during vertical transfer of heat such as in convection currents. However, convective transfer of heat within a container of air does not involve significant vertical movement of air and therefore does not involve adiabatic heating.

Which One of the Following Processes Does Not Occur During