Question

Which of the following is not an example of convection? Warm air rising from heated pavement The rolling motion of boiling water in a pot The handle of a frying pan on the stove becomes very hot Relatively cold water at the ocean surface sinks to deeper depths.

Answer 1

Answer: The handle of a frying pan on the stove

Explanation: Convection is the heat transfer done by the movement of a fluid, or the molecules on it. This can happen by the change on density from fluids, when a fluid tempeture rise, it expands, rising his volumen and decreasing his density. When this happens the fluid becomes lighter, so it moves.

The handle of a frying pan gets hotter but no molecular movement is done. It is between the same material there is a energy transfer from the source to the rest of the pan. This is called Conduction.