Answer:
Convection
Step-by-step explanation:
What are the three types of heat transfer? Conduction, Convection, and Radiation. Conduction would be like touching a hot piece of metal (think of it like conducting electricity except it's heat). Convection is like this example where the hot water on the bottom rises because it is lighter in weight (the same reason a hot air balloon raises) and is cooled at the top which makes it heavy so it sinks down. This happens in a boiling pot of water, the earth, and the sun. Radiation is like light energy from standing in sunshine or near a fire.