Question

How does thermal energy transfer when a room is heated by a furnace?

Hot air is absorbed by the objects in the room; cold air expands and rises.
Hot air is circulated through the room; the hot air rises, and cold air falls.
Hot air makes direct physical contact with the objects in the room and rises.
Hot air is transmitted by electromagnetic waves; the hot air rises and falls.

Answer 1

Convection is a circulation of the heat or thermal energy emitted by a heat source. Heating materials usually causes them to expand; as they become hotter, they also become less dense.

Convection describes the transfer of heat from hot areas of liquids and gases to cooler ones. This causes the heated, less dense material (hot air) to rise and more dense material to fall (cool air) as it’s pulled by gravity

Step-by-step explanation: