Also, if two solid are in good contact heat will conduct between them. Metals are excellent conductors, woods are poor conductors and small pockets of air are poor conductors. Radiation - transfer of heat in a gas or a vacuum. Think of heat from a fireplace or camp fire. Heats you from a distance.
Shiny materials reflect heat and black or dark materials absorb heat.
Better to use shiny material for firefighter clothes. Can travel great distances. Fog nozzle spraying reduces radiation. Convection - transfer of heat by the circulation of air and gases. Resistance - Having more current than an electric wire is designed to carry will cause heating of the wire, melting and burning of the insulation and a fire.