When the altitude increases, the air pressure decreases (or "GOES DOWN") and vice versa.
This is due to the fact that air is affected by gravity, therefore there is more of it at a lower altitude than at a higher altitude.
The rate of change of air pressure as a function of increasing altitude decreases with increasing altitude.
It drecrease
The air pressure slowly decreases as you rise in altitude.
it goes throuh space
Altitude has a large affect on the air pressure and air density. Air density reduces with altitude and air pressure reduces with altitude as well.
As altitude increases, air pressure decreases. As altitude decreases, air pressure increases.
Altitude decreases, pressure increase, temperature decreases (some, but less effect than pressure), density goes up.
The greater the altitude, the lower the air pressure.
This would actually be a simple answer: Pressure decreases. Simply because of the fact that as altitude increases, the less air there is on top of you, and the lower the pressure would be.
the air pressure outside of the balloon decreases.
as the altitude increases density of air decreases. This makes it harder to breath.
Increased altitude means decreased air pressure.