Which statement describes how thermal energy is transferred when a hand is held above a fire but not in the path of rising air?

Which statement describes how thermal energy is transferred when a hand is held above a fire but not in the path of rising air?

• A. It is being transferred by radiation because the hand is not in the path of rising air.
• B. It is not transferred by radiation because the hand is not in the path of rising air.
• C. It is being transferred by radiation because the hand is in the path of rising air.
• D. It is not transferred by radiation because the hand is in the path of rising air.

Answer: (A)

Heat transfer by radiation is the way heat moves through electromagnetic waves, so it can warm objects without touching them or relying on moving air. In this scenario, the hand is above the fire but not in the path of the rising hot air, so convection (which would need the warm air to reach the hand) isn’t the main mechanism. The hand still receives heat from the flames through radiation, making this the best description.

Heat transfer by radiation is the way heat moves through electromagnetic waves, so it can warm objects without touching them or relying on moving air. In this scenario, the hand is above the fire but not in the path of the rising hot air, so convection (which would need the warm air to reach the hand) isn’t the main mechanism. The hand still receives heat from the flames through radiation, making this the best description.