Q:Answer the following question given this paragraph: The warm-air vent is placed near the floor of the room. Warm air is less dense than cold air so it rises. If the warm-air vent were placed near the ceiling instead, how would this affect the transfer of thermal energy throughout the room?. Q: What property of warm air causes it to rise above cold air? Choices: - greater pressure - greater density - higher temperature - lower density A:
A:
lower density