Oxygen
What happens to the ratio of oxygen in the air, as altitude increases ?
Labels: thinktank
posted by Rajesh Lal at
8:40 AM
Monday, December 8, 2008
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7 Comments:
I'm supposing this means Oxygen:Other Chemicals
If so, then the ratio probably won't change, just the density of the air.
Sticky
I agree: Rajesh appears to be asking an unrecognized question, or is just asking for a recitation of fact. Flight manuals regularly state that Oxygen remains at a very constant 21% of "air" up to 100km.
I wouldn't call this fact "obvious" in any way as various aerosols and gases rise to higher altitudes -- e.g., some of the ozone-destroying chemicals flow upwards through the atmosphere.
I would have said that the ratio increases with altitude as the various gases that make up smog and air pollution tend to settle downwards - as can be seen over any city skyline. I think that these would more than make up for CFCs and other gases rising upwards. It would be interesting to know how the flight manuals get their information.
yah it just gets thiner that all
as the altitude increases, the oxygen decreases. that is why when you r in a plane and something happens, they supply oxygen at higher temperatures and that is why we can not live in space without a special suit and oxygen.
oxygen in the atmosphere is always 21% regardless of the pressure of the atmosphere. so at the peak of everest, or the death valley in cali, there is always 21% o2 in the atmosphere
i agree with those that say as a ratio oxygen in air stays at 21%. the reason you cant breathe at higher altitudes is that air pressure is different, and there is litterally less molecules of air, filling up the same space, to go in and out of your lungs. if the percentage of oxygen changed based on alitude you would have no trouble breathing in and out up in sky but you would get dizzy quickly because you wouldnt have enough oxygen.
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