how does heat transfer in liquids and gases ?
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Answer: Convection is by far the most efficient and common way for heat to be transferred through liquids and gases. It occurs when some regions of a fluid get hotter than others, causing currents in the fluid that move it around to distribute that heat more evenly. When air heats up, it becomes light, causing it to move upwards. Cold air is much heavier and falls to the floor. As the hot air moves to the ceiling and the cold air falls, these two types of air collide and mix, causing the heat from the warm arm to transfer to the cooler air and thus distributing the heat throughout the room.
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