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WorksheetsCPL PoF Atmosphere Revision
Total questions: 15
Worksheet time: 8mins
What percentage of the atmosphere is Nitrogen
21%
100%
78%
1%
What percentage of the atmosphere is Oxygen
78%
50%
95%
21%
What is the ISA sea level density
1225 kg/m³
1.225 kg/m²
1.225 kg/m³
0.1225 kg/m²
What happens to air pressure with a gain in altitude?
Increases
No change
Decreases
Gains more energy
Select all values that are ISA values at sea level
15°C
1013.25 hPa
1.225 kg/m³
1013.25 Inches of Mercury
What happens to density if temperature increases?
Air density increases
Air density decreases
It will not change
With an increase in density altitude what would happen to engine performance?
Engine performance would get better
No change to engine performance
Engine performance would decrease
At approximately 18,000 - 20,000' what will the pressure be compared to sea level
The same as sea level pressure
75% of sea level pressure
25% of sea level pressure
Half of sea level pressure
What is viscosity?
The stickiness of air
The smoothness of air
The temperature of air
The feeling of the air
If pressure increases what happens to density
Decreases
Nothing at altitudes below 10,000'
Pressure doesn't effect density at all
Increases
Select all below that effect density altitude
Pressure
Speed
Weight
Humidity
Temperature
What is the ISA temperature lapse rate
1.98°C/1000'
15°C/1000'
30°C/1000'
3°C/1000'
What is the ISA pressure lapse rate?
1.98hPa/30'
30°C/1000'
30hPa/1000'
1hPa/30'
Does humidity effect density
Yes
No
With respect to density altitude what is the height gained/lost with each 1°C variation from ISA
30'
120'
100'
1.98'
