Final answer:
The hot plume that rises and then spreads in a fire room is known as a 'fire plume', a result of convection. Conduction and radiation are also modes of heat transfer, exemplified by a warming metal spoon in hot tea and the warmth of sunlight, respectively.
Step-by-step explanation:
The phenomenon wherein the hot plume rises from a fire and then spreads elsewhere in the fire room is known as a fire plume. This occurs due to the process of convection, where heat is transferred by the movement of fluids (in this case, gases in the air). When a fire creates a hot plume, it rises because hot air is less dense than cool air. Once this hot plume reaches the ceiling, it will spread out across the room. A real-life example of heat transfer by convection, other than fire, would be when a radiator warms up the air in a room, causing the hot air to rise and circulate.
Conduction is a method of heat transfer through direct contact between materials. For example, when a metal spoon is placed in a hot cup of tea, the handle of the spoon will eventually become warm due to conduction. Radiation is a method of heat transfer that does not require a medium to travel through, as it can occur even through a vacuum; one everyday example is feeling the warmth of the Sun on your skin.