Heat transfer consists of the transfer of heat energy from one medium to another, it can occur through radiation, conduction and convection on a pot of water boiling, it happens as follows:
- When the flame ignites the fire heats the pot (radiation) and the heat is transferred by conduction from the bottom of the pot.
- At a certain point, the water begins to create balls - these are local regions of hot water rising to the surface, bringing heat from the hot part to the colder, denser part, above, by convection.
- At the same time, the colder, denser water at the top of the pot will sink, and will be quickly heated.
Therefore, we can conclude that the process of heat transfer allows the flow of energy from the highest point to the lowest temperature as in a pot of boiling water.
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