Which of the following is NOT a method of heat transfer?

The correct answer is that condensation is not a method of heat transfer. Condensation refers to the process in which water vapor transforms into liquid water, typically as the air cools. While condensation is often associated with heat transfer because it releases energy in the form of latent heat, it is not a method of heat transfer itself.

In contrast, the other options—convection, conduction, and radiation—are all recognized methods through which heat can be transferred.

Convection involves the movement of fluid (liquid or gas) where warmer areas of a liquid or gas rise to cooler areas, effectively transferring heat throughout the fluid.

Conduction is the process of heat transfer through direct contact between materials, where kinetic energy is transferred from one particle to another.

Radiation involves the transfer of heat through electromagnetic waves, which can occur in a vacuum, such as sunlight traveling through space to warm the Earth.

Understanding the distinction between these methods is key in studying thermodynamics and energy transfer processes in various scientific contexts.