Atmosphere Flashcards
1
Q
What are the three gases that make up the atmosphere and their percentages?
A
78% nitrogen, 21% oxygen, 1% Other gases
2
Q
What are the 4 layers of atmosphere starting from sea level?
A
Troposphere, stratosphere, mesosphere, thermosphere
3
Q
What are the factors that affect the atmosphere?
A
Position on earth, weather
4
Q
What is ISA?
A
Internationally agreed set of standard values for temperature, pressure and density
5
Q
What is ISA used for?
A
Calibrating and checking aircraft instruments and performance
6
Q
Sea level value for density?
A
1.225kg/m^3
7
Q
Sea level value for pressure in psi
A
14.7psi
8
Q
Sea level value for pressure in mbar
A
1013.25mbar
9
Q
Sea level value for temperature
A
15°C
