meteorology ch6 self quiz
If the air temp is 12 Deg C and the vapor pressure is the same as the saturation vapor pressure, the relative humidity is... Less than 100% More than 100% 100%
100
If the mixing ratio of a parcel of air is 2 grams per kilogram and its saturation mixing ratio is 6 grams per kilogram, the relative humidity is ____ percent 3 33.3 40 300 333
33.3
A lapse of ____ Cel Deg per 1km is stable for clear air and unstable for cloudy air 3 7 13 5 11
7
A lapse rate of ____ Cel Deg per 1000 m is conditionally stable 12 4 8 15 2
8
A lapse rate of____ Cel Deg per 1000 m is unstable for unsaturated (clear) air parcels 11 8 1 6 None of these
8
In winter, the precipitaiton of h20 value is likely to b highest in ___. Miami, FL Denver, CO Milwaukee, WI
Miami
___, annual precipitation is less than annual evaporation. A. On the ocean B. ON the continents
On the ocean
All of the following soundings (temp profiles) always indicate stable atmosphereic conditions w/ the exception of Temp inversion Isothermal conditions No change in temp w/ alt A drop of temp w/ alt An increase in temp w/ alt
a drop of temp
As saturated (cloudy) air flows up the windward slopes of a mountain range The relative humidity increases The mixing ratio doesn't change The saturation mixing ratio decreases The air temp rises None of these
air temp rises
A lapse rate of ____ Cel Deg per 1000m is stable for unsaturated air parcels... 8 7 2 All of the above
all
As a clear parcel of air ascends dry adiabatically Its relative humidity increases Its saturation vapor pressure decreases Its temp drops All of the above None of these
all
As unsaturated (clear) air flows down the leeward slops of a mountain range, The air temp rises The relative humidity decreases The saturation vapor pressure increases All of the above None of these
all
Air mass advection ___cahnges the relative humidity Can Can't
can
Sublimation is to deposition as evaporation is to ____. Evapotranspiration Sublimation Relative humidity Deposition Condensation
cond
___, annual precipitation is greater than annual evapotranspiration On the ocean On the continents
cont
2 = 2 volumes of air at the same temp and pressure have different amounts of h20 vapor in them. The air parcel w/ the higher relative humidity will... Weigh more than the other parcel Contain more molecules than the other parcel Contain the same number of molecules as the other parcel Weigh the same as the other parcel
contain the same number
If the temp of an unsaturated (clear) air parcel doesn't change while mixing ratio increases, the density of the parcel___... Increases Decreases Doesn't cahnge
dec
If a saturated (cloudy) air parcel is heated (say by absorption of radiation), its relative humidity ___... Increases Decreases Doesn't change
decreases
A relatively warm surface tends to___ the overlying air Stabalize Destabalize
destablalize
As the temp of a saturated (cloudy) air parcel falls, its relative humidity ___... Increases Decreases Doesn't change
doesnt change
In an isothermal temp profile, the air temp Doesn't change w/ altitude Decreases w/ alt Increases w/ alt
doesnt'
Unstable air___ vertical motion of air parcels... Enhances Suppresses Has no effect on
enhances
Rising parcels of saturated (cloudy) air do no cool as rapidly as rising parcels of unsaturated (clear) air because Rising parcels of saturated air do work in expanding Expansional cooling of saturated air is partially compensated for by release of latent heat Saturated air parcels r always warmer than their surroundings All of the above None of the above
expansional cooling...
On a clear and calm day, the relative humidity usually ____ between sunrise and early afternoon... Rises Falls Doesn't fall
falls
Suppose tht the vapor presssure of the cold outside air is the same as the vapor pressure of the warm air indoors. If the door is opened and the cold air replaces some fo the warm air, then the new relative humidity indoor would b Higher than b4 The same as b4 Lower than b4
higher than
___ on a Stuve diagram are isobars Diagonal lines Horizontal lines Vertical lines
horizontal
An ex of sublimation is... Dew forming on grass Ice disappearing while temps remain below freezing Melting snow Frost forming on glass
ice
The greatest amount of latent heat is absorbed form the environment wen Ice changes directly to vapor Ice melts Liquid h20 changes to vapor Frost forms
ice changes directly to vapor
A temp inversion is characterized by an ____ of air temp w/ altitude Increase Decrease
inc
The saturation vapor pressure____ w/ rising air temp Decreases Increases
inc
Rising air temp causes the saturation mixing ratio to ____ Increase Decrease
increase
A rain shadow is situated downwind from the ___ slopes of a high mountian barrier Windward Soutehrn Leeward
leeward
In an agricultural field, direct evaporation of h20 from the soil is usually____ transpiration of water by plants Less than About the same as More than
less
Clouds are___ to develop if a radiosonde sounding indicates unstable air. Less likely More likely
more
Cumulus clouds are ____ likely to build into thunderstorm clouds wen the air temp profile (sounding) indicates unstable conditions Most Least Not
most
As an aircraft ascends within the troposphere, the external... Air presure increases Vapor pressure increases Saturation mixing ratio increases Air density increases None of these
none
As an unsaturated parcel of air ascends dry adiabatically, Its relative humidity decreases Its saturation vapor pressure increases Its temp rises All of the above None of these
none
If the mixing ratio of a parcel of air is 6 grams per kilogram and the relative humidity is 25%, the saturation mixing ratio is ___ grams per kilogram 1.5 12 8 2 None of these
none
___, annual precipation is less than annual evaporation On the ocean On the continents
ocean
The max pressure tht h20 vapor molecules could exert if the air were saturated is called the Saturation vapor pressure Dewpoint Saturation mixing ratio Saturation relative humidity Saturation abs humidity
saturtion vapor pressure
A snow cover tends to____ the overlying air. Stabalize Destabalize
stabalize
Normally, the stratosphere is ____ Stable Unstable Conditionally stable
stable
___ air tends to suppress convection Unstable Stable
stable
Evaporation is to condensation as deposition is to___... Evaporation Precipitation Evapotranspiration Sublimation None of these
subl
Stable air___ vertical motion of air parcels Enhances Suppresses Has no effect on
sup
2 = volumes of air have the same temp and pressure. One contains more h20 vapor than the other Both volumes of air contain the same number of gaseous molecules The more humid parcel contains more gaseous molecules than the other The drier parcel contains more gaseous molecules than the other. None of these
the more humid parcel...
Conditional stability indicates tht an air layer is... Stable for both cloudy and clear air parcels Unstable for cloudy stable for clear air parcels Stable for cloudy and unstable for clear air parcels Unstable for both cloudy and clear air parcels None of these
unstable for cloud stable for clear air parcels
Conditional stability indicates that an air layer is... Stable for both saturated and unsaturated air parcels Unstable for saturated and stable for unsaturated air parcels Stable for saturated and unstable for unsaturated air parcels Unstable for both saturated and unsaturated air parcels None of the above
unstable for saturated
If the air temp drops w/ alt such tht the actual lapse r8 (sounding) is 7 F degreese per 1000 ft, the air layer is ___ for saturated (cloudy) air parcels and ____ for unsaturated (clear) air parcles Stable...stable Unstable...unstable Stable...unstable Unstable...stable
unstable...unstable...
Cumulus clouds r more likely to form over Snow covered ground in winter A lake surface in summer Vegetated land surface in summer Frozen tundra in winter An ice-covered lake
vegetated
The windward side of mountain ranges r relatively ____ compared to the leeward side Dry Wet
wet
