42 Cards in this Set
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name the 4 different types of atmospheric llifting mechanisms:
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1. convergent
2. conventional
3. orographic
4. frontal
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describe a convergent mechanism
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2 airstreams coming together.
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what is an example of convergent mechanisms
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ITC, sea breeze
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describe conventional mechanism
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can work together. density differences in atmosphere.
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T/f conventional mechanisms normally occur during cooler weather
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false, warmer weather actually
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describe orographic mechanisms
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air is forced to rise over barrier (mountain). Only occur in hilly or mountainous areas.
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frontal mechanism
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...
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what is the hydrolic cycle?
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the cycle of evaporation and precipitation over land and water. it goes to rivers and then back to oceans. balances out.
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humidity
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refers to the amount of water vapor in air
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normal sea level has a value of:
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1013.2 mb
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over water is there more evaporation or precipitation?
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evaporation
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is there more precip or eval over land?
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precipitation
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...
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which of the following is true of the polar front zone?
a. it has frequent strong winds
b. zone where warm and cold air mix
c. polar jet stream is normally above it
d. all of the above
e. none of the above
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which of the following is not true of the wind?
a.winds are named based on the direction hat they blow in
b.the direction of flow can be affected by the rotation of the earth
c. it blow from regions of high pressure to regions of low pressure
d.air blows form hotter regions to colder …
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D
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as temps increase drink the day, relative humidity
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decreases
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if the earth's rotation was reversed.SE winds would become
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SW
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which of the following is incorrect regarding the sub polar low pressure cells
a. in the northern hemisphere, they are generally stronger in the summer
b. they're associated with the polar front
c. they are known as the aleutian and icelandic lows
d. they develop more quickly over oce…
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A
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the inter tropical convergence zone is characterized by:
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convergence and uplift of warm surface air
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cooling of a surface overnight that chills the air layer directly above the surface may form
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radiation fog
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which of the following is true of high pressure?
a. they generally involve atmospheric pressures lower than 1000 mb
b. air descends and diverges within high pressure systems
c. airr converges and ascends within high pressure systems
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B
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the wetter, intercepting slope of a mountain is termed the _____ slope, where as the drier , downward slope is termed the _____
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westward, leeward
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which of the following is true of India's weather pattern
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...
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when water evaporates, it ____ heat energy and ____ the surrounding air
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absorbs, cools
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as reported by the national service, the heat index:
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relates temperature and relative humidity
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In which part of the atmosphere are clouds found?
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trophosphere
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stableTerm
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specific humidity
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stable or unstable? air parcel is warmer and less dense than surround atmosphere
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unstable
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air parcel is cooler and denser than surrounding atmosphere. stable or unstable?
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...
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____ is a good indicator of how much moisture is in the air
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dew point
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100% relative humidity, that is the air that is holding as much moisture as it can at its temperature is equal to: _____ and_____
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...
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saturation and dew point
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...
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if cooler air has less capacity to hold water then why do mornings have higher relative humidity?
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since relative humidity is content over capacity, in the morning there is a smaller bubble in terms of capacity. so though its not as humid, i
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T/f most heavy fog days occur along the coasts of countries
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True
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clouds will only form at or above the ______ level
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condensation
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___ ocean mT contains less moisture than the ____ mT air mass. it is able so stable
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pacific, atlantic
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____ occur between advancing cP or mP air and warmer air masses
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cold fronts
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in a cold front, warm air is forced to rise upwards against the colder denser air forming ____ and ___ clouds
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cumulus and cumulonimbus
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___ occur when warm air advances over cold air
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warm front
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is an imaginary line across a continent that separates moist air from an eastern body of water and dry desert air from the west.
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dry line
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stages of mid latitude cyclone
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cyclogenis
open stage
occluded stage
dissolving stage
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ingredients for a thunderstorm
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1. lift from:
cold/warm front
gust front
daytime heating
2. low-level moisture
3. instability
4. wind shear
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what is needed for a server thunderstorm:
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1. winds stronger than 58 mph
2. hailstones larger than .75 in
3. tornado
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GEO 101: Exam 3