Atmosphere Flashcards
What chemicals are in the atmosphere.
Nitrogen.
Oxygen.
Argon.
Wide variety of other gasses.
What percentage of the atmosphere is Nitrogen.
78%.
What percentage of the atmosphere is Oxygen.
21%.
What percentage of the atmosphere is Argon.
Just under 1%.
What percentage of the atmosphere are a wide variety of gasses.
0.4%.
What does QNE stand for.
Height above 1013.2 hPa.
What does QNH stand for.
Altitude/Height AMSL.
What does QFE stand for.
Height AGL.
What do winglets do.
They stop the higher pressure air getting to the lower pressure air which creates high amounts of drag.
Where in the atmosphere do airplanes fly.
Troposphere.
Stratosphere.
What is Dew point.
The dew point is the temperature to which air must be cooled to become saturated with water vapor.
What is relative humidity.
Relative humidity is the percentage of the moisture against the highest possible level of moisture in the air at a specific temperature.
What is the usual height of QNE.
> 11000
What is the usual height of QNH.
<11000ft
