Weather Flashcards
A trough is an extension of a _____
Low-pressure area
A ridge is an extension of a _____
High-pressure area
Good weather is associated with _____ pressure areas and _____.
High
Ridges
Poor weather, found in fronts and squall lines are associated with _____ pressure areas and _____.
Low
Troughs
At an airfield w/ a high density altitude (hotter than normal) the DA would be _____ than the published field elevation & pressure altitude.
higher
In hot weather the altimeter reads too low as aircraft fly _____ than normal
higher
What direction do gradient winds travel parallel to isobars around a “H” high pressure system?
CW (clockwise)
Density Altitude (DA) is a reference to or index of _____ rather than height.
aircraft performance
DA is pressure altitude corrected for nonstandard temperature deviations. As such on a hot day air molecules are further apart _____ the air density and _____ the density altitude.
decreasing
increasing
-SS
Light Sandstorm
DS
Dust Storm
+VCSHRA
Heavy rain showers in the vicinity
BC
Patches
BL
Blowing
DR
Low drifting
FZ
Freezing
SQ
Squalls
PRFG
Partial fog
BLPY
Blowing spray
