Question

which scenario shows radiation? (1 point)

eggs boil in a pot of water.

air warmed by a floor radiator rises to the top of a room, forcing cooler air downward.

the air under a reading lamp is warmed.

eggs cook in a skillet.

Explanation:

To determine radiation, recall: Radiation is heat transfer via electromagnetic waves (no medium needed).

• "Eggs boil in a pot of water": Conduction (pot to water) + convection (water movement), not radiation.
• "Air warmed by a floor radiator rises...": Convection (warm air rising, cool air sinking).
• "The air under a reading lamp is warmed": Reading lamp emits heat via radiation (infrared waves) to warm the air (no direct contact, uses EM waves).
• "Eggs cook in a skillet": Conduction (skillet to eggs).

So the scenario with radiation is the air under a reading lamp being warmed.

Answer:

The option: "The air under a reading lamp is warmed." (the third option in the list)