Two air columns extend from sea level up to an altitude of 10 km. If one column
ID: 232946 • Letter: T
Question
Two air columns extend from sea level up to an altitude of 10 km. If one column is cold and the other is warm, the air pressure in the warm column will _______ the air pressure in the cold column.
A) decrease more rapidly with increasing height than
B) increase more rapidly with increasing height than
C) increase at the same rate as
D) decrease less rapidly with increasing height than.
A station at an altitude of 90 m (about 300 feet) above sea level measures an air pressure of 990 mb. Under normal conditions, which of the values below do you think would be the most realistic sea level pressure for this station?
A) 999 mb
B) 990 mb
C) 981mb
D) 1080 mb
E) 900 mb
Cold air aloft is associated with constant pressure surfaces that are found at _______ altitude than normal and _______ than normal atmospheric pressure aloft.
A) lower, lower
B) higher, higher
C) higher, lower
D) lower, higher
Explanation / Answer
answer 1 - when 2 air column in which one is cold and other is warm the air pressure in the warm air will (Option D) decreses less rapidly with increasing height than the air pressure of cold layer. because warm layer is less dense than cold layer moist layer is dense than the dry air which makes it easier to life them and form cloud.
answer 2- at the altitude of 90m (330 ft) the sea level pressure is 990 mb (Option B& E) . normal mean sea level pressure is 1013mbar. and on incresing in altitude there is decrese in the air pressure on incresing the altitude of 30ft is 1mb or 1mb decrese in air pressure with incresing in 9 m increse in altitude. So the air pressure at the altitude of 300 ft the air pressure will drop about 10 mbar .
answer 3- Cold air aloft is associated with the constant pressure surfaces that are found at lower altitude than the normal and lower than the normal atmospheric pressure aloft.