JPATS Weather - NETC

JPATS AVIATION WEATHER BOOKLET
11. The quantities 1013.2 mb and 29.92 in-Hg are two different expressions for the ______.
a. atmospheric density at a standard air temperature of 15° C
b. atmospheric pressure at sea level at an air temperature of 0° C
c. standard atmospheric pressure at mean sea level and at a standard air temperature of
15° C
d. weight of the atmosphere at the surface of the Earth
12. In the lower 5000 feet of the atmosphere, a decrease of one inch of mercury in atmospheric
pressure would cause a change in an altimeter reading of approximately ________ feet
(assuming constant elevation and altimeter setting).
a. minus 100
b. plus 100
c. minus 1000
d. plus 1000
13. Which one of the following correctly describes the meteorological feature of a trough?
a. An elongated area of relatively low pressure
b. An elongated area of relatively high pressure that extends from the center of a High
pressure area.
c. An area where the pressure in the center is higher than the surrounding areas
d. A long shallow often V-shaped receptacle for the drinking water or feed of domestic
animals
14. Which one of the following items would have a value closest to that used as a Kollsman
window setting for an altimeter in the U.S. (assuming an airfield above sea level)?
a. Station pressure
b. Station temperature
c. AGL pressure
d. Sea level pressure
15. The height of an aircraft above the ground is known as ______.
a. MSL/True altitude
b. AGL/absolute altitude
c. indicated altitude (IA)
d. pressure altitude (PA)
1-13 Version 3.2/Dec 08