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Meteorology Exam 2
The study of weather
A high water vapor pressure indicates
A relatively large number of water vapor molecules in the air
The time of day when the relative humidity reaches a maximum value is usually
as the time when the air temperature is lowest
The dew point temperature is a measure of the total amount of water vapor in the air
The temperature to which air must be cooled in order to become saturated is the
dew point temperature
particles that serve as surfaces on which water vapor may condense are called
condensation nuclei may be
particles of dust, nitric acid particles, smoke from forest fires, salt from ocean, all of the above
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 bottom up
radiation fog forms best on
clear winter night with a slight breeze
on a cold, calm autumn morning the formation of fog above a relatively warm lake would most likely be:
which association below is not correct
altostratus- high cloud
which cloud is least likely to produce precipitation that reaches the ground?
light or moderate but steady precipitation is most often associated with __ clouds
Cirrus clouds are composed primarily of
an anvil shaped top is most often associated with
hail is usually associated with what cloud?
Clouds that appear as bag-like sacs hanging from beneath a cloud are
if an air parcel is given a small push upward and it falls back to its original position, the atmosphere is said to be
the rate at which the actual air temperature changes with increasing height above teh surface is referred to as the
environmental lapse rate
a rising air parcel of air that does not exchange heat with its surroundings is an example of
an adiabatic process
the rate at which the temperature changins inside a rising or descending parcel of saturated air is called the
moist adiabatic lapse rate
the dry adiabatic rate is the rate at which
temperature changes in a rising or descending parcel of unsaturated air
most thunderstorms do not extend very far into the stratosphere because the air in the stratosphere is
which set of conditions, working together, will make the atmosphere the most stable?
cool the surface and warm the air aloft
if an air parcel is given a small push upward and it continues to move upward on its on accord, the atmosphere is said to be
__ are found beneath fair-weather cumulus (cumulus humilis) clouds, whereas __ are found between the couds
the vertical motion of air caused by sun heating the ground iss called
Soaring birds in flight, like hawks and eagles, often indicate the prescence of
large raindrops fall __ than smaller raindrops, and have a __ terminal velocity than small raindrops
faster and greater
which cloud would most likely produce drizzle?
the merging of liquid cloud droplets by collision is called
if you observe large raindrops hitting the ground, you could probably say that the cloud overhead was __ and had ___ updrafts
thick and strong
after a rainstorm, visibility typically
rain which falls from a cloud but evaporates before reaching the ground is referred to as
large, heavy snowflakes are associated with
moist air and temperatures well below freezing
fall streaks most often form with
in the winter you read in the newspaper that a large section of the Midwest is without power due to downed power lines. Which form of precipitation would most likely produce this situation?
Which is not a correct association?
snow grains-- hail
a raindrop or partially melted snowflakes that freezes into a pellet of ice in a deep subfreezing layer of air
which type of precipitation would most likely form when the surface air temperature is slightly below freezing and the air temperautres increases as you move upward away from the ground?
precipitation withe the greatest size is
the lightest form of rain is
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