Heat transfer through a solid via direct contact is known as?

Heat transfer through a solid via direct contact is known as?

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

Answer: (B)

Conduction is heat transfer through a solid via direct contact. In solids, energy moves from the hotter region to the cooler region through interactions between particles and, in metals, free electrons that carry energy quickly from one place to another. This process requires a temperature difference and happens without the material moving as a whole. It’s different from convection, which needs a fluid circulate to carry heat; radiation, which uses electromagnetic waves and can occur through empty space; and evaporation, which involves a phase change and is not the mechanism by which heat travels through a solid.

Conduction is heat transfer through a solid via direct contact. In solids, energy moves from the hotter region to the cooler region through interactions between particles and, in metals, free electrons that carry energy quickly from one place to another. This process requires a temperature difference and happens without the material moving as a whole. It’s different from convection, which needs a fluid circulate to carry heat; radiation, which uses electromagnetic waves and can occur through empty space; and evaporation, which involves a phase change and is not the mechanism by which heat travels through a solid.