Underwater, there are insane implosions at 25K feet below sea level. At that same depth on land, we have caves.
Why doesn’t the earth compress things like water does? Does gravity do different things to different materials?
In: Planetary Science
Air is far, _far_ less dense than water.
The greater the density of a substance, the more rapid the pressure changes are within that substance as one climbs or descends.
(_Specifically, this is because the substance with greater density will have greater mass for the same volume, and that greater mass means that gravity pushes it more._)
The density of dry air at sea level pressure and 0 C temperature is about 1.29 kg/m3. The density of water at 4 C temperature is about 998 kg/m3.
It only takes about ten metres of water to equal the entire weight of air in the atmosphere.
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