Heya! So, the radiation from a fire warms the bottom of a pot. Through conduction, the water inside the pot is warmed. Finally, through convection, the hot water rises and less hot water sinks, forming a motion similar to that of a circle. Hope this helps!
The radiation from the fire transfers the heat to the bottom of the pot, the metal from the bottom of the pot conducts this heat and transfers it into the water inside, the water inside starts to heat up and transfer it to other water molecules by convection, and finally, the hotter water rises while the cooler water sinks. Hope this helps!
