A surface low pressure center is generally associated with ____ on an upper-air isobaric chart.
A) a trough
B) a ridge
C) zonal flow
D) divergence
Question 2Atmospheric pressure changes ____.
A) more rapidly in the horizontal direction than in the vertical
B) more rapidly in the vertical direction than in the horizontal
C) at the same rate in the horizontal and vertical directions
D) more rapidly in the vertical direction over land than over the ocean
Question 3To correctly monitor horizontal changes in air pressure, the most important correction for a mercury barometer measurement is the correction for ____.
A) temperature
B) altitude
C) density
D) gravity
Question 4To obtain the station pressure, you must normally make corrections for ____.
A) temperature and gravity
B) temperature and altitude
C) operator error and temperature
D) temperature and time
Question 5The scale on an altimeter indicates altitude, but an altimeter actually measures ____.
A) temperature
B) density
C) pressure
D) humidity
Question 6A ____ pressure usually indicates clearing weather or fair weather.
A) constant
B) steadily rising
C) steadily falling
D) fluctuating
Question 7Suppose a column of air has constant air temperature. What would happen if we force more air into the column?
A) The air would become less dense, and the surface air pressure would increase.
B) The air would become more dense, and the surface air pressure would decrease.
C) The air would become less dense, and the surface air pressure would decrease.
D) The air would become more dense, and the surface air pressure would increase.
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