WX 201 Exam 2 with correct Answers (Graded A)
Dew is most likely to form on
clear, calm nights
Which two clouds can produce precipitation?
cumulonimbus and nimbostratus
If fog is forming in Denver, Colorado (located on the eastern side of the Rocky Mountains), and the wind is blowing f...
WX 201 Exam 2 with correct Answers (Graded
A)
Dew is most likely to form on
clear, calm nights
Which two clouds can produce precipitation?
cumulonimbus and nimbostratus
If fog is forming in Denver, Colorado (located on the eastern side of the Rocky Mountains), and the
wind is blowing from the east, then the fog is most likely
upslope fog
On a cold, winter morning, the most likely place for radiation fog to form is
in a valley
As Apollo 12 ascended into the atmosphere, the height of the surrounding clouds was noted to be
42,000 feet. A lightning strike was seen within these clouds, indicating that they must have been
cumulonimbus
Advection fog is often observed along the Pacific coast during summer, as westerly winds carry moist
air toward the shore. The fog forms because the surface water near the coast is ____ the surface
water farther offshore.
much colder than
Condensation nuclei are important in the atmosphere because
they make it easier for condensation to occur in the atmosphere
Frost typically forms on the inside of a windowpane (rather than the outside) because
there is more water vapor touching the inside of the pane
The fog that forms along the Pacific coastline of North America is mainly of which type?
advection fog
Particles that serve as surfaces on which water vapor may condense are called
condensation nuclei
When temperatures are below freezing, the temperature to which air must be cooled in order for a
phase change (from liquid to ice) to occur is called the
frost point
In Howard's cloud classification system sheetlike clouds were named ____ ("layer"); a puffy cloud
____ ("heap"); a wispy cloud ____ ("curl of hair"); and a rain cloud ____ ("violent rain").
stratus; cumulus; cirrus; nimbus
, Fog that forms in industrial areas is usually quite thick because the pollution particles provide large
numbers of ____ nuclei on which water droplets can form.
hygroscopic
Clouds are classified by their
altitude and appearance
In regions where there are no clouds, it is difficult to observe the movement of air using satellite
imaging. To help with this situation, geostationary satellites are equipped with ____ that can profile
the distribution of atmospheric water vapor in the middle and upper troposphere.
water-vapor sensors
Light or moderate-but-steady precipitation is most often associated with ____ clouds.
nimbostratus
Cirrus clouds are composed primarily of
ice particles
Which cloud type is composed of ice crystals and can cause a halo to form around the Sun or Moon?
cirrostratus
Mammatus clouds most frequently form on the underside of ____ clouds.
cumulonimbus
Radiation fog forms best on a
clear winter night with a slight breeze
The cooling of the ground to produce dew is mainly the result of:
radiational cooling
Hail is usually associated with what cloud?
cumulonimbus
The dew point is the temperature at which
saturation occurs
Altocumulus castellanus appearing in the sky indicates that the mid-level of the troposphere is
becoming
more unstable
A rising parcel of air that does not exchange heat with its surroundings is an example of
an adiabatic process
Which of the following sets of conditions would produce a cumulus cloud with the lowest base?
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