Answer the following question given this paragraph: 

Heat and work are the two distinct methods of energy transfer. Heat is energy transferred solely due to a temperature difference. Any energy unit can be used for heat transfer, and the most common are kilocalorie (kcal) and joule (J). Kilocalorie is defined to be the energy needed to change the temperature of 1.00 kg of water between 14.5ºC and.


Q: Energy transferred solely due to a temperature difference is called?


A:
heat