Conduction<span> means the flow of heat between two objects that are in thermal contact.There is no actual mass transfer,only the thermal </span>energy<span> is passed from layer to layer.</span> Convection<span> means transfer of heat between fluids by actual mass transfer. It occurs only in fluids.</span> Radiation<span> means the emission of thermal energy in the form of </span>electromagnetic waves<span> by an object.</span>
