Question

question 10
which of the following is an example of convection?
a metal spoon becoming hot in a boiling pot of water.
a person warming their hands by a campfire.
warm air rising and cold air sinking in the atmosphere.
the heat from a stove burner warming a metal pot.

Explanation:

Convection is the transfer of heat through the movement of fluids (liquids or gases). In the case of warm air rising and cold air sinking, it is a classic example of convection currents in the atmosphere.

• Option A (a metal spoon becoming hot in boiling water) is conduction (heat transfer through direct contact in solids).
• Option B (warming hands by a campfire) is radiation (heat transfer via electromagnetic waves).
• Option D (heat from a stove burner warming a metal pot) is conduction (direct heat transfer from burner to pot).

Answer:

C. Warm air rising and cold air sinking in the atmosphere.