ATMOSPHERE Flashcards
1
Q
nitrogen : oxygen (by both volume and weight) ?
A
4:1 by volume
3:1 by weight
2
Q
supplementary oxygen is needed above which level?
A
above 10,000 ft
3
Q
Max. concentration of ozone is found between what range?
A
20-25 km
4
Q
99% of airmass is concentrated below what height?
A
below 35 km
5
Q
Troposphere height from both at equator and at poles?
A
upto 16-18 km at equator and upto 8-10 km at poles from the surface of the earth
6
Q
there is reversal of temperature and density above what height?
A
above 8 km
7
Q
Lapse Rate in ISA condition
A
Upto 11 km (36,090 ft), Lapse rate= 6.5° C/km
from 11-20 km (65,617 ft), Temp is constant = -56.5° C
from 20-30 km Temp increases at 1°C/km
At 32 km Temp= -44.5° C
