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Meteorology Exam 2

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As the air temperature increases, the air's capacity for water vapor
Increases
Which of the following will increase in a rising parcel of air?
relative humidity
High water vapor pressure indicates
A relatively large number of water vapor molecules in the air
The percentage of water vapor present in the air compared to that required for saturation
relative humidity
At what time of day is the relative humidity normally at a minimum?
When the air temperature is highest
The dew point temperature is a measure of the total amount of water vapor in the air. T/F
True
If the air temperature remains constant, evaporating water into the air will __ the dew point and __ the relative humidity
increase, increase
As the difference btwn air temp. and dew point increases, the relative humitidy
decreases
The temp to which air must be cooled in order to become saturated is the
dew point temperature
As the air temp increases, w/ no addition of water vapor to the air, the dew point will:
remain the same
Dew is most likely to form on
clear, calm nights
The cooling of the ground to produce dew is mainly the result of
radiational cooling
Particles that serve as surfaces on which water vapor may condense are called
Condensation nuclei
On a humid day, the ___ causes salty potato chips left outside in an uncovered bowl to turn soggy
attraction of water by hdygroscopic condensation nuclei
Condensation nuclei may be
Particles of dust
Nitric acid particles
Smoke from forest fires
Salt from the ocean
Condensation nuclei are important in the atmosphere because
they make it easier for condensation to occur in the atmosphere
When radiation fog "burns off", the fog tends to dissipate
From the bottom up
Radiation forms best on a
clear night with a slight breeze
On a cold, winter morning the most likely place for radiation fog to form is
in a valley
The fog that forms along the Pacific coastline of North America is mainly this type
Advection fog
If fog is forming in Denver, CO, and the wind is blowing from the east, the the fog is most likely
Upslope fog
When you see your breath on a cold morning the air temperature
Can be above or below freezing
For is a major hazard to aviation T/F
true
Which association is not correct?
altostratus=high cloud
Which associatoin is not correct?
Cumulus congestus=anvil top
Which cloud is least likely to produce precipitation that reaches the ground?
cirrocumulus
A halo around the moon means that
Cirrostratus clouds are present
Which cloud type is composed of ice crystals and can form a halo around the moon or sun?
Cirrostratus
Which of the following associations is not correct?
Stratocumulus -- cloud of vertical development
Light or moderate-but-steady precipitation if most often associated with
nimbostratus
Which of the following cloud types are very similar in appearance?
Altocumulus and cirrocumulus
Cirrus clouds are composed primarily of
ice particles
A middle cloud that sometimes forms in parallel waves or bands is
altocumulus
An anvil-shaped top is most often associated with
cumulonimbus
Name given to towering cloud that has not fully developed into a thunderstorm
cumulus congestus
A low, lumpy cloud layer that appears in rows, patches or rounded masses would be
Stratocumulus
Hail is usually from what cloud?
cumulonimbus
The cloud with the greatest vertical growth is
cumulonimbus
The small smooth cloud that may form just above the top of a towering cumulus cloud is a
pileus cloud
The cloud-like streamer often seen forming behind an aircraft flying at high altitude is a
contrail
Clouds that have a characteristic lens-shaped appearance are referred to as
lenticular
Clouds that appear as bag like-sacks hanging beneath a cloud are
mammatus
On an infrared satellite picture, low warm cloud appear ___ and high cold clouds appear ___
gray, white
Geostationary satellites
Orbit the earth once a day
Remain above a fixed spot on the equator
Are placed in higher orbits than most polar orbiting satellites
On humid days, salt in saltshakers sometimes becomes moist and no longer pours out easily. The salt can be described as
hygroscopic
Radiation fog typically forms on
clear, calm nights