2025 WX301 Final Exam, With Question
Answer And Rationale
Weather is a factor in about ___% of all aviation accidents
10
40
<10
21 ------- Correct Ans ---------- 21
Weather is a factor in about ___% of aviation fatalities
60
10
30
<10 ------- Correct Ans ---------- 30
The main cause of weather-related aviation fatalities is
thunderstorms
icing
continued flight into IMC
wind and turbulence ------- Correct Ans ---------- continued flight into IMC
The leading cause of airport delays is ___
Traffic volume
Closed runways
Equipment failures
Weather ------- Correct Ans ---------- Weather
The leading cause of airport weather delays is
Reduced visibility
Thunderstorms
Low ceilings
Gusty wind and turbulence ------- Correct Ans ---------- Thuderstorms
Average sea level pressure is about
1013 mb
14 lb per square inch
29.92 in Hg
all the above ------- Correct Ans ---------- all of the above
500 mb is equal to __ Pa
18,000
50,000
50
,5 ------- Correct Ans ---------- 50,000
Which of the following does NOT occur when a column of air is heated
the average density decreases
the number of molecules per volume decreases
pressure decreases with height at a faster rate
the air molecules move faster on average ------- Correct Ans ---------- pressure
decreases with height at a faster rate
The height above sea level at which the pressure is 700 mb is about
10,000 ft
25,000 ft
5,000 ft
30,000 ft ------- Correct Ans ---------- 10,000 ft
The pressure at 30,000 ft is about __ mb
400
200
100
300 ------- Correct Ans ---------- 300
Cooling air at constant pressure will
increase pressure
decrease pressure
decrease density
increase density ------- Correct Ans ---------- increase density
Heating a parcel or air at constant pressure will make it __ dense than the surrounding
air. The parcel will then __
more, rise
more, sink
less, sink
less, rise ------- Correct Ans ---------- less, rise
If I heat air in a closed container the pressure inside the container will
rise
fall
stay constant ------- Correct Ans ---------- rise
In the ISA (Standard Atmosphere), the lapse rate in the troposphere is closest to
3ºC per 1,000 ft
-3ºC per 1,000 ft
-2ºC per 1,000 ft
2ºC per 1,000 ft ------- Correct Ans ---------- 2ºC per 1,000 ft
Pressure decreases with height faster in a __ column
, cold
dry
warm
moist ------- Correct Ans ---------- cold
A warm column of air has __ than normal pressure aloft and __ than normal pressure
near the surface
higher, lower
lower, higher
higher, higher
lower, lower ------- Correct Ans ---------- higher, lower
If I am flying toward an area that is warmer than normal, my altimeter will read low
True
False ------- Correct Ans ---------- 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
300 feet lower
30 feet higher
300 feet higher
30 feet lower ------- Correct Ans ---------- 300 feet 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
lower, less
lower, more
higher, more
higher, less ------- Correct Ans ---------- higher, more
An isothermal layer is a layer in which ___
temperature increases with height
temperature decreases with height
temperature is constant with height ------- Correct Ans ---------- temperature is constant
with height
An inversion layer is where the temperature __ with height. An inversion has a __ lapse
rate
decreases, negative
increases, positive
decreases, positive
increases, negative ------- Correct Ans ---------- increase, negative
In a stable atmosphere, a parcel pushed up will be __ than the surrounding air and will
___
Warmer, sink back to original level
Answer And Rationale
Weather is a factor in about ___% of all aviation accidents
10
40
<10
21 ------- Correct Ans ---------- 21
Weather is a factor in about ___% of aviation fatalities
60
10
30
<10 ------- Correct Ans ---------- 30
The main cause of weather-related aviation fatalities is
thunderstorms
icing
continued flight into IMC
wind and turbulence ------- Correct Ans ---------- continued flight into IMC
The leading cause of airport delays is ___
Traffic volume
Closed runways
Equipment failures
Weather ------- Correct Ans ---------- Weather
The leading cause of airport weather delays is
Reduced visibility
Thunderstorms
Low ceilings
Gusty wind and turbulence ------- Correct Ans ---------- Thuderstorms
Average sea level pressure is about
1013 mb
14 lb per square inch
29.92 in Hg
all the above ------- Correct Ans ---------- all of the above
500 mb is equal to __ Pa
18,000
50,000
50
,5 ------- Correct Ans ---------- 50,000
Which of the following does NOT occur when a column of air is heated
the average density decreases
the number of molecules per volume decreases
pressure decreases with height at a faster rate
the air molecules move faster on average ------- Correct Ans ---------- pressure
decreases with height at a faster rate
The height above sea level at which the pressure is 700 mb is about
10,000 ft
25,000 ft
5,000 ft
30,000 ft ------- Correct Ans ---------- 10,000 ft
The pressure at 30,000 ft is about __ mb
400
200
100
300 ------- Correct Ans ---------- 300
Cooling air at constant pressure will
increase pressure
decrease pressure
decrease density
increase density ------- Correct Ans ---------- increase density
Heating a parcel or air at constant pressure will make it __ dense than the surrounding
air. The parcel will then __
more, rise
more, sink
less, sink
less, rise ------- Correct Ans ---------- less, rise
If I heat air in a closed container the pressure inside the container will
rise
fall
stay constant ------- Correct Ans ---------- rise
In the ISA (Standard Atmosphere), the lapse rate in the troposphere is closest to
3ºC per 1,000 ft
-3ºC per 1,000 ft
-2ºC per 1,000 ft
2ºC per 1,000 ft ------- Correct Ans ---------- 2ºC per 1,000 ft
Pressure decreases with height faster in a __ column
, cold
dry
warm
moist ------- Correct Ans ---------- cold
A warm column of air has __ than normal pressure aloft and __ than normal pressure
near the surface
higher, lower
lower, higher
higher, higher
lower, lower ------- Correct Ans ---------- higher, lower
If I am flying toward an area that is warmer than normal, my altimeter will read low
True
False ------- Correct Ans ---------- 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
300 feet lower
30 feet higher
300 feet higher
30 feet lower ------- Correct Ans ---------- 300 feet 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
lower, less
lower, more
higher, more
higher, less ------- Correct Ans ---------- higher, more
An isothermal layer is a layer in which ___
temperature increases with height
temperature decreases with height
temperature is constant with height ------- Correct Ans ---------- temperature is constant
with height
An inversion layer is where the temperature __ with height. An inversion has a __ lapse
rate
decreases, negative
increases, positive
decreases, positive
increases, negative ------- Correct Ans ---------- increase, negative
In a stable atmosphere, a parcel pushed up will be __ than the surrounding air and will
___
Warmer, sink back to original level
