Question

multiple choice question
use of a fan or a breeze to cool the body is an example of which type of heat transfer?
radiation
evaporation
conduction
convection

Explanation:

To determine the heat transfer type:

• Radiation: Heat via electromagnetic waves (e.g., sun’s heat), not related to fans/breezes.
• Evaporation: Cooling via liquid turning to gas (e.g., sweating), not about air movement.
• Conduction: Heat transfer through direct contact (e.g., touching a hot pan), not air movement.
• Convection: Heat transfer via fluid (air/water) movement. A fan/breeze moves air, carrying heat away from the body—this is convection.

Answer:

D. Convection