Sweating when we work is an example of cooling by:

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

Answer: (C)

Verified step by step guidance

1. Understand the concept of heat transfer mechanisms: Conduction, Radiation, Convection, and Evaporation. Each mechanism involves a different way of transferring heat.
2. Conduction refers to the transfer of heat through direct contact between molecules. For example, touching a hot surface transfers heat to your skin.
3. Radiation involves the transfer of heat through electromagnetic waves, such as the heat you feel from the sun or a fire without direct contact.
4. Convection is the transfer of heat through the movement of fluids (liquids or gases). For example, warm air rising and cool air sinking creates convection currents.
5. Evaporation is the process where liquid water turns into vapor, removing heat from the surface. Sweating cools the body because the evaporation of sweat absorbs heat from the skin, effectively lowering body temperature.