Physics for IGCSE & O level - Thermal Effects (Section 5 - No. 8)
Which of the following is a good example of convection?
A metal spoon heating up in hot soup.
Warm air rising above a radiator.
The sun warming your skin.
A block of ice melting in your hand.
Giải thích
Convection involves the movement of fluids, like air, due to temperature differences.