question about air pressure please answer!!?

Question

if i was standing on earth at sea level and there was only 1% of the air pressure there is right now at that level what would happen to me pysiologically i know that you would die but i wanna know how exactly.

Answer 1

If the air pressure decreased to only 1%, then at that temperature your blood would start boiling. This is one of the reasons why airplane cabins have to be pressurized and astronauts have to wear spacesuits.

To cause phase change, you can increase the temperature or decrease the pressure, so by decreasing down to 1% of sea-level pressure, your blood would vaporize very quickly, and you'll also die very quickly. Even if your blood didn't boil, the outside pressure is so low that you won't be able to breathe; air will rush out of your lungs (air flows from high pressure to low pressure) and they will collapse.

Answer 2

If you appeared there from some place with standard pressure (which would be equivalent to being moved to 85,000 feet), the dissolved air in your blood would almost immediately form bubbles giving you a form of the bends and blocking your blood flow at all the narrow points in your body. If you were wearing a pressure suit to avoid this, then the air in your lungs would expand 100 times, destroying the air sacks as it does in divers who try to hold their breath when rising from even 30-40 feet down instead of exhaling on the way up.
If somehow you survived that then the sharply reduced oxygen content available would cause you to blackout within a few minutes.
There is a slight amount of time because of the mass of the body and the scene in 2001 a Space Odyssy where the astronaut breaks back into the ship from the pod without a space suit by diving into the open hatch and slamming it behind him the port instantly filling with air is considered just barely possible - 20-30 seconds perhaps in total vacuum.

Answer 3

You evolved with pretty much the air pressure we have now.... about 14 lbs per square inch on your body. If the air pressure disappeared to, as you say only one percent, you would die by your blood boiling. Here's how it works.....

At sea level, water boils at 212F (l00C), and as you rise, the temperature needed decreases, because the pressure ON the water in the pot is less........ continue up the mountain or up in a rocket, and by the time you have 1% of the pressure, temperature of your blood exceed the temperature for it to boil.... that is why astronauts wear pressurized space suits.... to keep their blood from boiling... (And of course secondarily, to keep warm, but that is secondary.)

Answer 4

Yes this is correct hotter temperature in the atmosphere will decrease the air pressure. This is because the air is rising and expanding. The high pressure area does not just contain high temperatures it creates them. Remember this law of physics, cools by expansion and heats by compression. A high pressure area is descending and compressing thus heating the air. Low pressure is cooling and expanding rising air.