Question

When heat is transferred by actual movement of particles, it is referred to as heat transfer by ___________.

• A. conduction
• B. convection
• C. radiation
• D. conduction and radiation

Answer 1

The correct option is B convection

Heat is transferred by three means - conduction, convection and radiation.
The process of transfer of heat by the vibration of the particles without leaving their position is termed as conduction.
The process of transfer of heat by the actual movement of particles of fluid is termed as convection.
The process of transfer of heat in form of electromagnetic waves is termed as radiation. Hence, radiation does not require any medium for the transfer of heat.