The Atmosphere Flashcards
What’s the percentage of the different gases in the atmosphere?
78% Nitrogen, 21% Oxygen and 1% Trace Gases
What are the four layers of the atmosphere starting at Sea Level?
Troposphere, Stratosphere, Mesosphere and Thermosphere
In the lower part of which layer does the Temperature remain constant?
Stratosphere
What happens to Pressure, Temperature and Density in the Troposphere as you go up in altitude?
Pressure, Temperature and Density reduce
What’s the International Standard Atmosphere?
It’s an international agreed set of standard values at various altitudes, representing average conditions at various aeronautical centres around the world
What happens to Temperature as height increases through the Troposphere?
Temperature reduces
What happens to Temperature in the lower Stratosphere?
Temperature remains constant
What are the ISA Sea Level values for Pressure?
1.01325 bar, 1013.25 mbar, 101325 N/m² and 14.7 psi
What are the ISA Sea Level values for Temperature?
15 °C, 288.15 K and 59 °F
What are the ISA Sea Level values for Density?
1.225 Kg/m³
