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

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

Respuesta :

The answer is B,This is an example of convection, where fluid will circulate.This is because when part of air is warmed up, they expand and become less dense then rise,Therefore, the colder air contracts and become denser and sinks, in order to take in the place of the warm air. This phrase circulates and therefore the it can transfer heat a lot more faster.
 
consueloace1980

Answer: yea its B so the THER PERSON IT RIGHT

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