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Showing results 401 - 410 of 969 total.
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3.3.3.9.4.A.1
PAR PGL PBG PBH PLA PRG PRH RPA RPG RPH PAT PGT PHT
Knowledge Code: I22
Which factor would tend to increase the density altitude at a given airport?
*A) An increase in ambient temperature.
B) A decrease in relative humidity.
C) An increase in barometric pressure.
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Modified: 3/6/2004 kip
Comments: 2
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3.3.3.9.5.A.1
PAR PGL PBG PBH PLA PRG PRH RPA RPG RPH PAT PGT PHT
Knowledge Code: I23
The wind at 5,000 feet AGL is southwesterly while the surface wind is southerly. This difference in direction is primarily due to
*A) friction between the wind and the surface.
B) stronger pressure gradient at higher altitudes.
C) stronger Coriolis force at the surface.
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Modified: 3/1/2004 kip
Comments: 0
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3.3.3.9.6.A.1
PBG PBH
Knowledge Code: I23
What condition does a rising barometer indicate for balloon operations?
A) Approaching frontal activity.
*B) Decreasing clouds and wind.
C) Chances of thunderstorms.
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Modified: 4/23/2004 kip
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3.3.3.9.7.A.1
PAR PGL PBG PBH PLA PRG PRH RPA RPG RPH PAT PGT PHT
Knowledge Code: I24
What is meant by the term 'dewpoint'?
A) The temperature at which condensation and evaporation are equal.
B) The temperature at which dew will always form.
*C) The temperature to which air must be cooled to become saturated.
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Modified: 4/4/2007 HABpilot
Comments: 1
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3.3.3.9.8.A.1
PAR PGL PBG PBH PLA PRG PRH RPA RPG RPH PAT PGT PHT
Knowledge Code: I24
The amount of water vapor which air can hold depends on the
A) stability of the air.
*B) air temperature.
C) dewpoint.
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Modified: 3/6/2004 kip
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3.3.3.9.9.A.1
PAR PGL PBG PBH PLA PRG PRH RPA RPG RPH PAT PGT PHT
Knowledge Code: I24
Clouds, fog, or dew will always form when
*A) water vapor condenses.
B) relative humidity reaches 100 percent.
C) water vapor is present.
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Modified: 3/6/2004 kip
Comments: 2
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3.3.4.0.0.A.1
PAR PGL PBG PBH PLA PRG PRH RPA RPG RPH PAT PGT PHT
Knowledge Code: I24
What are the processes by which moisture is added to unsaturated air?
A) Supersaturation and evaporation.
B) Heating and condensation.
*C) Evaporation and sublimation.
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Modified: 3/6/2004 kip
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3.3.4.0.1.A.1
PAR PGL PBG PBH PLA PRG PRH RPA RPG RPH PAT PGT PHT
Knowledge Code: I24
Which conditions result in the formation of frost?
*A) The temperature of the collecting surface is at or below the dewpoint of the adjacent air and the dewpoint is below freezing.
B) The temperature of the surrounding air is at or below freezing when small drops of moisture fall on the collecting surface.
C) The temperature of the collecting surface is at or below freezing when small droplets of moisture fall on the surface.
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Modified: 3/6/2004 kip
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3.3.4.0.2.A.1
PAR PGL PBG PBH PLA PRG PRH RPA RPG RPH PAT PGT PHT
Knowledge Code: I24
The presence of ice pellets at the surface is evidence that there
A) are thunderstorms in the area.
B) has been cold frontal passage.
*C) is a temperature inversion with freezing rain at a higher altitude.
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Modified: 3/6/2004 kip
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3.3.4.0.3.A.1
PAR PGL PBG PBH PLA PRG PRH RPA RPG RPH PAT PGT PHT
Knowledge Code: I25
What measurement can be used to determine the stability of the atmosphere?
*A) Actual lapse rate.
B) Atmospheric pressure.
C) Surface temperature.
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Modified: 3/6/2004 kip
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