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GEOG 1900 Exam 2: Questions & 100% Accurate Answers
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GEOG 1900 Exam 2: Questions & 100% AccurateAnswers
Vapor pressure Correct Ans - contribution of water vapor to total
atmospheric pressure
Specific Humidity (SH) Correct Ans - grams of water vapor per kilogram
of air (mass/mass)
Mixing ratio Correct Ans - grams of water vapor per kilogram of dry air
(mass/mass)
Water vapor saturation point Correct Ans - the limit of the amount of
water vapor the air can contain
When the relative humidity is 100% Correct Ans - air is saturated and
condensation occurs
Relative humidity Correct Ans - the actual concentration of water vapor
in the air compared to concentration of WV in air with the same temp at
saturation (vapor pressure/saturation vapor pressure)
Saturation of liquid and ice when mixing ratio is over 1.79 Correct Ans -
air is saturated with liquid, but super saturated to ice (air is losing to ice)
Saturation of liquid and ice when mixing ratio is under 1.79 Correct Ans -
water turns to ice
Dew point temperature Correct Ans - the temperature to which air has
to be cooled in order to reach saturation
Higher dew point= Correct Ans - higher vapor content
Frost point temperature Correct Ans - dew point temperature below
freezing point
, Sling psychrometer Correct Ans - tool made of a wet and dry
thermometer that measures relative humidity and requires a table to
interpret the two temperatures
Hair hygrometer Correct Ans - instrument used to measure relative
humidity, based on the fact that human hair stretches as humidity increases
Where in the world is there more moisture? Correct Ans - summer, near
equator, lower elevation, near oceans
Clouds require _____to form Correct Ans - Saturation
Condensation nuclei Correct Ans - Microscopic particles on which water
vapor condenses to form cloud droplets.
Ice-forming nuclei Correct Ans - small, solid particles suspended in the
air; ice can form on the suspended particles
Diabatic process Correct Ans - when a given parcel of air expands/cools
or compresses/warms with interchange of heat with its outside environment
Adiabatic process Correct Ans - A process in which no heat is transferred
to or from the system by its surroundings.
When an air parcel rises it __________. Correct Ans - expands and cools
Lapse rate Correct Ans - The rate at which temperature decreases with
an increase in altitude.
Dry adiabatic lapse rate Correct Ans - 10 C/km; The rate at which the
temperature of a parcel of dry air decreases as the parcel is lifted in the
atmosphere.
Saturated adiabatic lapse rate Correct Ans - the rate at which a saturated
parcel of air (i.e. one in which condensation is occuring) cools as it rises
through the atmosphere. At around 7°C/km this is lower than the DALR
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