WX 301 Exam 1 Study Guide Exam
Questions and CORRECT Answers
The average concentration of 02 and N2 are about - CORRECT ANSWER - 21% and 78%
Average sea level pressure is about - CORRECT ANSWER - 1013 mb
14 lb per square inch
29.92 in Hg
When a column of air is heated the following occur: - CORRECT ANSWER - - the air
molecules move faster on average
- the average density decreases
- the number of molecules per volume decreases
The station level pressure for PHX is 28.9 in Hg at an elevation of 1200 ft. The MSL pressure is
about - CORRECT ANSWER - 30.1 in Hg
Cooling air at constant pressure will - CORRECT ANSWER - increase density
Heating a parcel or air at constant pressure will make it ___ dense than the surrounding air. The
parcel will then ___. - CORRECT ANSWER - less, rise
If I heat air in a closed container the pressure inside the container will - CORRECT
ANSWER - rise
In the ISA, the lapse rate in the troposphere is closest to - CORRECT ANSWER - 2 degrees
Celsius per 1,000 ft
Pressure decreases with height faster in a ___ column - CORRECT ANSWER - cold
, A warm column of air has ___ than normal pressure aloft and ___ than normal pressure near the
surface - CORRECT ANSWER - higher, lower
If i am flying toward an area that is warmer than normal, my altimeter will read low - CORRECT
ANSWER - True
If my altimeter is set to 30.10 in Hg and the MSL pressure is actually 29.80 in Hg, my actual
altitude is ___ than indicated - CORRECT ANSWER - 300 ft lower
On a very hot day, the density altitude will be ___ than normal and I will need ___ runway to
become airborne at normal takeoff speed - CORRECT ANSWER - higher, more
An isothermal layer is a layer in which ___ - CORRECT ANSWER - temperature is constant
with height
An inversion layer where the temperature ___ with height. An inversion has a ___ lapse rate. -
CORRECT ANSWER - increases, negative
In a stable atmosphere, a parcel pushed up will be ___ than the surrounding air and will ___. -
CORRECT ANSWER - Cooler, sink back to original level
Which is more stable?
Troposphere or Stratosphere - CORRECT ANSWER - Stratosphere
In the tropics the stratosphere is ___ than in middle latitudes - CORRECT ANSWER - colder
Flying conditions in the stratosphere are usually - CORRECT ANSWER - smooth and clear
Questions and CORRECT Answers
The average concentration of 02 and N2 are about - CORRECT ANSWER - 21% and 78%
Average sea level pressure is about - CORRECT ANSWER - 1013 mb
14 lb per square inch
29.92 in Hg
When a column of air is heated the following occur: - CORRECT ANSWER - - the air
molecules move faster on average
- the average density decreases
- the number of molecules per volume decreases
The station level pressure for PHX is 28.9 in Hg at an elevation of 1200 ft. The MSL pressure is
about - CORRECT ANSWER - 30.1 in Hg
Cooling air at constant pressure will - CORRECT ANSWER - increase density
Heating a parcel or air at constant pressure will make it ___ dense than the surrounding air. The
parcel will then ___. - CORRECT ANSWER - less, rise
If I heat air in a closed container the pressure inside the container will - CORRECT
ANSWER - rise
In the ISA, the lapse rate in the troposphere is closest to - CORRECT ANSWER - 2 degrees
Celsius per 1,000 ft
Pressure decreases with height faster in a ___ column - CORRECT ANSWER - cold
, A warm column of air has ___ than normal pressure aloft and ___ than normal pressure near the
surface - CORRECT ANSWER - higher, lower
If i am flying toward an area that is warmer than normal, my altimeter will read low - CORRECT
ANSWER - True
If my altimeter is set to 30.10 in Hg and the MSL pressure is actually 29.80 in Hg, my actual
altitude is ___ than indicated - CORRECT ANSWER - 300 ft lower
On a very hot day, the density altitude will be ___ than normal and I will need ___ runway to
become airborne at normal takeoff speed - CORRECT ANSWER - higher, more
An isothermal layer is a layer in which ___ - CORRECT ANSWER - temperature is constant
with height
An inversion layer where the temperature ___ with height. An inversion has a ___ lapse rate. -
CORRECT ANSWER - increases, negative
In a stable atmosphere, a parcel pushed up will be ___ than the surrounding air and will ___. -
CORRECT ANSWER - Cooler, sink back to original level
Which is more stable?
Troposphere or Stratosphere - CORRECT ANSWER - Stratosphere
In the tropics the stratosphere is ___ than in middle latitudes - CORRECT ANSWER - colder
Flying conditions in the stratosphere are usually - CORRECT ANSWER - smooth and clear
