What is atmospheric pressure?
Force exerted by air molecule per unit area
It is exerted by the gravitational force of the earth
of the two locations , which one has the highest atmospheric pressure and why?
a) p1, because of the grater amount of overlying air
b) p2, because f the greater amount of overlying air
c) p1, because of the lower amount of overlying air
d) p2, because of the lower amount of overlying air
What is the ideal gas law?
the law states:
o p = PRT
o p = pressure (Pa)
o P = air density (kg.m^3)
o R = 287 (J/kg x K)
o T = K
o Near surface, often expressed as: temperature = constant x pressure
If temperature increases, what will be the impact on pressure, according to the Law, air
density is held constant
a) Pressure will increase
b) Pressure will decrease
c) Pressure will not change
d) Pressure will increase at first, then decrease
What is the relation between air pressure and altitude?
air pressure: decreases with altitude
near surface air pressure drops rapidly: with increasing altitude
what will happen id a 30cm hole suddenly occurs midair in the fuselage of an airliner?
a) Pressure within the cabin will increase
b) Pressure within the cabin will decrease
c) Pressure within the cabin will not change
d) Passengers will not experience any difference
Air Pressure change and altitude
A mountain climber at the top of Mt.Everest is