Physics
Which best describes how air moves during convection?
Cool air falls down
Warm air falls down
Cool air is replaced by warm air
Air always falls down
Cool air falls down
In convection, hot air rises from the Earth’s surface and becomes cold at higher altitude because of lower temperature there. As it cools, it sinks down to the surface of the Earth. On reaching Earth, it warms again and rises up again. The main reason for this phenomenon is – sinking cold air pushes the warm air up.
Cool air falls down In convection, hot air rises from the Earth’s surface and becomes cold at higher altitude because of lower temperature there. As it cools, it sinks down to the surface of the Earth. On reaching Earth, it warms again and rises up again. The main reason for this phenomenon is – sinking cold air pushes the warm air up.
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