Fact 1: When a cooler object touches a warmer object , thermal conduction occurs.

Fact 2: Heat transfer is by conduction, convection, and radiation.

Given the two facts above, answer the question "How is heat transferred?" with the following options: 
- rays or beams
 - kinetic energy
 - photons
 - heat energy
 - sweating
 - energy
 - convection
 - Evaporation


 

       convection  