An ice pack is an example of which heat transfer method?

• A. Conduction
• B. Convection
• C. Radiation
• D. Conversion

Answer: (A)

Conduction is the transfer of heat through direct contact between materials. An ice pack demonstrates this because when it’s placed against the skin, heat flows from the warmer body tissues into the colder ice pack through the contact surface. This energy transfer continues until temperatures balance, and the ice absorbs heat enough to melt, helping to cool the tissue. Convection would require moving air or fluid to carry heat away, and radiation would transfer heat via infrared energy without direct contact; conversion isn’t a standard mode of heat transfer.