How can I demonstrate that the atmosphere pressure is not the same in the sea than in the everest? (or just between two heights)

Question

anonymous · Answer

The pressure exerted on a submerged body is expressed as$$P = \rho g h$$where $\rho$ is the density of air (for exact analysis, this will be also be a function of height as the density of air changes with increasing pressure), g is acceleration of gravity, and h is the height of the atmosphere above the object.

osanseviero · Answer

But, how can i demonstrate it with a normal or a simple experiment?

anonymous · Answer

You can put a lid on an empty plastic coke bottle and poke a hole in it. Then get a vacuum pump to start pumping the air out. When the bottle hasn't crushed all the way, the density of the air will be similar to that on Mt. Everest while the density where you are is closer to sea level. So the pressure from the atmosphere where you are crushes the coke bottle.

anonymous · Answer

If you have to actually do this, ZipLock sells a little plastic pump to go with their vacuum sealed plastic ZipLock bags. It only costs a few dollars at a grocery store.