ATOC Test 3 Fall 2011
Get a hint
Which dimension does not match a possible depth of airmass? - ANSWER-1 to 2 meters
Which dimension does not match a possible depth of airmass? - ANSWER-1 to 2 meters
Which of the following would typically be the coldest airmass? - ANSWER-(b) Arctic airmass
On a weather map, what marks the transition zone between two airmasses with sharply contrasting
properties? - ANSWER-(a) a front
Which of the following locations is not a good North American airmass source region? - ANSWER-(c) The
Pacific Northwest coast
An airmass is defined as a body of air with: - ANSWER-(d) slowly varying values of surface temperature
and moisture content.
Occluded fronts form as a _________ overtakes a(n) _________ - ANSWER-(d) cold front; warm front
,Which of the following statements about dry lines is false? - ANSWER-(d) Dry lines are found most
commonly east of the Mississippi River.
Which dimension does not match a possible depth of airmass? - ANSWER-1 to 2 meters
Which of the following would typically be the coldest airmass? - ANSWER-(b) Arctic airmass
On a weather map, what marks the transition zone between two airmasses with sharply contrasting
properties? - ANSWER-(a) a front
Which of the following locations is not a good North American airmass source region? - ANSWER-(c) The
Pacific Northwest coast
An airmass is defined as a body of air with: - ANSWER-(d) slowly varying values of surface temperature
and moisture content.
Occluded fronts form as a _________ overtakes a(n) _________ - ANSWER-(d) cold front; warm front
Which of the following statements about dry lines is false? - ANSWER-(d) Dry lines are found most
commonly east of the Mississippi River.
A dry line is a boundary between airmasses with similar _______ characteristics and differing ________
characteristics. - ANSWER-(c) temperature; moisture
Cold, relatively dry air is advancing southeastward. Stratus clouds are producing light, steady rain along
the frontal boundary. What type of air is most likely present ahead of the front? - ANSWER-(a) The air is
likely to be warm, moist and stable.
It is May on the Great Plains. A cold front is advancing toward you. What type of weather conditions
would you expect to find if the cold front is advancing into warm, moist, conditionally unstable air? -
ANSWER-thunderstorms
,Choose which frontal passage below best corresponds to the following forecast: "Cold temperatures are
expected today with winds from the east. Skies will be overcast with snow developing during the day.
Snow is expected to change to freezing rain and then rain later today. Tomorrow temperatures will be
warmer and the weather more pleasant with winds out of the south." - ANSWER-(c) warm front
Which of the following statements about extratropical cyclones is not true? - ANSWER-(b) They form
between approximately 5° and 60°N.
A primary role of extratropical cyclones is to: - ANSWER-(a) transport heat from the equator to the poles.
Where might a line of showers and thunderstorms develop south of the low-pressure center in a Rocky
Mountain cyclone? - ANSWER-(a) along the dry line
(b) along the cold front
(c) along the upper level front
(d) (a), (b), or (c) are possible, depending on the orientation and location of the these fronts in a
particular cyclone
Which statement about upslope flow and extratropical cyclones is correct? - ANSWER-(a) The Rocky
Mountains enhance upslope flow associated with cyclones.
(c) The region of a cyclone that experiences upslope flow may also develop strong winds and cold
temperatures
Which of the following may occur when extratropical cyclones develop on the Plains east of the Rockies
in early spring? - ANSWER-(a) A line of thunderstorms will often form ahead of the dry line or upper level
front.
(b) A widespread area of moderate rain or snow will typically occur north of the warm front.
(c) Heavy snow will fall along the Rockies north of the low because cold air is rising along the topography
in this region.
(d) Air will flow counterclockwise around the low.
An extratropical cyclone will intensify as long as __________at the surface is __________than
__________at the jetstream level. - ANSWER-(c) convergence; weaker; divergence
, During the winter a trowal is often associated with ____________. - ANSWER-cloudy skies and
precipitation
24. The Gulf of Mexico often provides the moisture necessary to fuel - ANSWER-snowfall in Great Plains
blizzards.
Which region of the United States has the highest annual probability of a blizzard? - ANSWER-(a)
Northern Great Plains
Immediately prior to the formation of the cyclone that eventually creates a Great Plains blizzard, where
would a 500 mb trough most likely be found? - ANSWER-(b) over the Rocky Mountains
As a blizzard-producing cyclone moves eastward, what direction does the associated Arctic airmass
move? - ANSWER-(b) southward
Which dimension does not match a possible depth of airmass? - ANSWER-1 to 2 meters
Which of the following would typically be the coldest airmass? - ANSWER-(b) Arctic airmass
On a weather map, what marks the transition zone between two airmasses with sharply contrasting
properties? - ANSWER-(a) a front
Which of the following locations is not a good North American airmass source region? - ANSWER-(c) The
Pacific Northwest coast
An airmass is defined as a body of air with: - ANSWER-(d) slowly varying values of surface temperature
and moisture content.
Occluded fronts form as a _________ overtakes a(n) _________ - ANSWER-(d) cold front; warm front
Which of the following statements about dry lines is false? - ANSWER-(d) Dry lines are found most
commonly east of the Mississippi River.
Get a hint
Which dimension does not match a possible depth of airmass? - ANSWER-1 to 2 meters
Which dimension does not match a possible depth of airmass? - ANSWER-1 to 2 meters
Which of the following would typically be the coldest airmass? - ANSWER-(b) Arctic airmass
On a weather map, what marks the transition zone between two airmasses with sharply contrasting
properties? - ANSWER-(a) a front
Which of the following locations is not a good North American airmass source region? - ANSWER-(c) The
Pacific Northwest coast
An airmass is defined as a body of air with: - ANSWER-(d) slowly varying values of surface temperature
and moisture content.
Occluded fronts form as a _________ overtakes a(n) _________ - ANSWER-(d) cold front; warm front
,Which of the following statements about dry lines is false? - ANSWER-(d) Dry lines are found most
commonly east of the Mississippi River.
Which dimension does not match a possible depth of airmass? - ANSWER-1 to 2 meters
Which of the following would typically be the coldest airmass? - ANSWER-(b) Arctic airmass
On a weather map, what marks the transition zone between two airmasses with sharply contrasting
properties? - ANSWER-(a) a front
Which of the following locations is not a good North American airmass source region? - ANSWER-(c) The
Pacific Northwest coast
An airmass is defined as a body of air with: - ANSWER-(d) slowly varying values of surface temperature
and moisture content.
Occluded fronts form as a _________ overtakes a(n) _________ - ANSWER-(d) cold front; warm front
Which of the following statements about dry lines is false? - ANSWER-(d) Dry lines are found most
commonly east of the Mississippi River.
A dry line is a boundary between airmasses with similar _______ characteristics and differing ________
characteristics. - ANSWER-(c) temperature; moisture
Cold, relatively dry air is advancing southeastward. Stratus clouds are producing light, steady rain along
the frontal boundary. What type of air is most likely present ahead of the front? - ANSWER-(a) The air is
likely to be warm, moist and stable.
It is May on the Great Plains. A cold front is advancing toward you. What type of weather conditions
would you expect to find if the cold front is advancing into warm, moist, conditionally unstable air? -
ANSWER-thunderstorms
,Choose which frontal passage below best corresponds to the following forecast: "Cold temperatures are
expected today with winds from the east. Skies will be overcast with snow developing during the day.
Snow is expected to change to freezing rain and then rain later today. Tomorrow temperatures will be
warmer and the weather more pleasant with winds out of the south." - ANSWER-(c) warm front
Which of the following statements about extratropical cyclones is not true? - ANSWER-(b) They form
between approximately 5° and 60°N.
A primary role of extratropical cyclones is to: - ANSWER-(a) transport heat from the equator to the poles.
Where might a line of showers and thunderstorms develop south of the low-pressure center in a Rocky
Mountain cyclone? - ANSWER-(a) along the dry line
(b) along the cold front
(c) along the upper level front
(d) (a), (b), or (c) are possible, depending on the orientation and location of the these fronts in a
particular cyclone
Which statement about upslope flow and extratropical cyclones is correct? - ANSWER-(a) The Rocky
Mountains enhance upslope flow associated with cyclones.
(c) The region of a cyclone that experiences upslope flow may also develop strong winds and cold
temperatures
Which of the following may occur when extratropical cyclones develop on the Plains east of the Rockies
in early spring? - ANSWER-(a) A line of thunderstorms will often form ahead of the dry line or upper level
front.
(b) A widespread area of moderate rain or snow will typically occur north of the warm front.
(c) Heavy snow will fall along the Rockies north of the low because cold air is rising along the topography
in this region.
(d) Air will flow counterclockwise around the low.
An extratropical cyclone will intensify as long as __________at the surface is __________than
__________at the jetstream level. - ANSWER-(c) convergence; weaker; divergence
, During the winter a trowal is often associated with ____________. - ANSWER-cloudy skies and
precipitation
24. The Gulf of Mexico often provides the moisture necessary to fuel - ANSWER-snowfall in Great Plains
blizzards.
Which region of the United States has the highest annual probability of a blizzard? - ANSWER-(a)
Northern Great Plains
Immediately prior to the formation of the cyclone that eventually creates a Great Plains blizzard, where
would a 500 mb trough most likely be found? - ANSWER-(b) over the Rocky Mountains
As a blizzard-producing cyclone moves eastward, what direction does the associated Arctic airmass
move? - ANSWER-(b) southward
Which dimension does not match a possible depth of airmass? - ANSWER-1 to 2 meters
Which of the following would typically be the coldest airmass? - ANSWER-(b) Arctic airmass
On a weather map, what marks the transition zone between two airmasses with sharply contrasting
properties? - ANSWER-(a) a front
Which of the following locations is not a good North American airmass source region? - ANSWER-(c) The
Pacific Northwest coast
An airmass is defined as a body of air with: - ANSWER-(d) slowly varying values of surface temperature
and moisture content.
Occluded fronts form as a _________ overtakes a(n) _________ - ANSWER-(d) cold front; warm front
Which of the following statements about dry lines is false? - ANSWER-(d) Dry lines are found most
commonly east of the Mississippi River.
