Definitions Flashcards
What is the definition of atmospheric pressure?
A measure of weight that a column of air exerts on an object
Define lapse rate
When temperature decreases with an increase in altitude
What is the definition of “true altitude”?
An actual or exact altitude above sea level. (Only on the ground)
Define “Indicated altitude”
In altitude above mean sea level indicated on the altimeter
Define “density altitude”
The altitude in the standard atmosphere where density of the air surrounding the aircraft is found
Define “fog”
A cloud resting on the earth surface composed of visible water droplets and or ice particles
Define METAR observation
Aviation routing weather report (xx:45-xx:59)
Define “isobar”
Lines drawn on weather mats to connect points of equal pressure
Define SPECI observation
Nonroutine aviation weather report
