1 Flashcards
Ridge
High pressure region
Hydrostatic pressure
Balance between gravity(down) and upward pressure
IFR
Less than 3 sm
Ceiling under 1000 ft
Diurnal variation
Daily heating and cooling of day and night
Albedo
Reflect back
Human visibility on light scale?
.4-.7
18000 ft is how many milibars?
500 milibars
MSL
Mean sea level
1nm=? Ft
1sm=? Ft
They are for what
1nm = 6080ft for speed 1sm= 5280ft for visibility
Standard atmosphere
- 92 hg
- 7 lbs per square inch
- 25 milibars
Density
Mass of molecules in a given volume
3 atmospheric states
Temperature
Density
Pressure
Aneroid
Not wet
Stratosphere temp increases due to what?
Ozone
1 inch Mercury is how many milibars per 1000 ft?
34
Kelvin
Absolute zero
Isobar
Constant pressure
Isotherm
Equal temperature
3 energy transfers
Radiation
Conduction
Convection
Unequal heating of the surface creates what?
Weather
Cold air is more dense thus?
Better performance
ISA
International standard atmosphere
15degrees c
Vernal equinox
Twice a year when day and night time is same
AGL
MSL
Above ground level
Mean sea level