Water is heated in a kettle. The inside water is heated by convection. A person sitting near the fire receives heat by:

(A) Conduction
(B) Convection
(C) Radiation
(D) Reflection

Q. The transfer of heat internal energy by microscopic collision of particles and movement of electrons within a body is called:
(A) Thermal conduction
(B) Thermal convection
(C) Thermal radiation
(D) None of these

Q. The heat transfer due to  bulk movement of molecules within fluids such as gases,  liquids or molten rocks is called: 
(A) Conduction
(B) Radiation
(C) Reflection
(D) Convection

Answers:
1. (B) Convection
2. (A) Thermal conduction
3. (D) Convection