Why does air not fall to the ground due to gravity? Also, why do lighter than air gases like helium rise?
In: Physics
Air falls due to gravity. Like water does. Water in the oceans does not all fall to the bottom of it, there’s a large pile of it as water has nowhere to go except on top of other water. Same with air. That’s why we have pressure (all that air above us), and that’s why pressure is less on Mt. Everest than at sea level, as the pile of air is not as high from that altitude.
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