WX 201 - Exam 2 Chapter 6-10 || with Certified Answers.
The elevation where clouds form is called ____ level. correct answers condensation
If the environmental lapse rate is 5 ° C per 1,000 m and the temperature at Earth's surface is 25 °
C, then the air temperature at 2,000 m above the ground is correct answers 15°C.
What transfers heat upward into the atmosphere? correct answers thermals
Just above cumulus clouds, you would expect to find correct answers a stable layer.
If an air parcel is given a small push upward and it falls back to its original position, the
atmosphere is said to be correct answers stable.
In a rising unsaturated thermal, the dew-point temperature correct answers decreases at a slower
rate than the parcel temperature.
An example of orographic clouds would be clouds correct answers forming on the windward
slope of a mountain.
Based on the above diagram, a rising air parcel given an initial push will: correct answers Return
to its initial position
If the environmental lapse rate is less than the moist adiabatic rate, the atmosphere is correct
answers absolutely stable.
Altocumulus clouds that show vertical development and produce tower-like extensions are called
correct answers altocumulus castellanus.
,An afternoon sky full of cumulus humilis clouds with little vertical growth indicates ____
weather. correct answers fair
The rate at which the actual air temperature decreases with increasing height above the surface is
referred to as the ____ rate. correct answers environmental lapse
Which of the following sets of conditions would produce a cumulus cloud with the lowest base?
correct answers air temperature 90°F, dew point temperature 60°F
In the above diagram, the environmental lapse rate (ELR) is: correct answers Conditionally
unstable
The difference between "moist" and "dry" adiabatic rates is due to the fact that correct answers
latent heat is released by a rising parcel of saturated air.
Absolute instability results when the environmental lapse rate is ____ the ____ adiabatic rate.
correct answers greater than; dry
A knowledge of air stability is important because it determines correct answers the vertical
motion of air.
Which cloud type below would most likely form in an unstable atmosphere? correct answers
cumulonimbus
Which environmental lapse rate represents the most unstable atmosphere in a layer of
unsaturated air? correct answers 11°C per 1,000 m
Most thunderstorms do not extend very far into the stratosphere because the air in the
stratosphere is correct answers stable.
, Inversions that form as air slowly sinks over a large area are called ____ inversions. correct
answers subsidence
If an air parcel is given a small push upward and it continues to move upward on its own accord,
the atmosphere is said to be correct answers unstable.
Dry adiabatic cooling and warming rates are approximately ____ of change in elevation. correct
answers 10 degrees Celsius for every 1000 m
An inversion represents an extremely stable atmosphere because air that rises into the inversion
will eventually become ____ and ____ dense than the surrounding air. correct answers colder;
more
The dry adiabatic lapse rate is the rate at which correct answers temperature changes in a rising
or descending parcel of unsaturated air.
Conditional instability depends on the condition of correct answers saturation.
The dry adiabatic rate is ____ greater than the moist adiabatic rate. correct answers always
In a sky filled with scattered cumulus humilis clouds, rising motions are found ____ the clouds
and sinking motions are found ____ the clouds. correct answers under; between
A rising parcel of air that does not exchange heat with its surroundings is an example of correct
answers an adiabatic process.
At Earth's surface, a rising saturated air parcel cools at the correct answers moist adiabatic rate.
When cloud elements become arranged in rows they are called cloud correct answers streets.
The elevation where clouds form is called ____ level. correct answers condensation
If the environmental lapse rate is 5 ° C per 1,000 m and the temperature at Earth's surface is 25 °
C, then the air temperature at 2,000 m above the ground is correct answers 15°C.
What transfers heat upward into the atmosphere? correct answers thermals
Just above cumulus clouds, you would expect to find correct answers a stable layer.
If an air parcel is given a small push upward and it falls back to its original position, the
atmosphere is said to be correct answers stable.
In a rising unsaturated thermal, the dew-point temperature correct answers decreases at a slower
rate than the parcel temperature.
An example of orographic clouds would be clouds correct answers forming on the windward
slope of a mountain.
Based on the above diagram, a rising air parcel given an initial push will: correct answers Return
to its initial position
If the environmental lapse rate is less than the moist adiabatic rate, the atmosphere is correct
answers absolutely stable.
Altocumulus clouds that show vertical development and produce tower-like extensions are called
correct answers altocumulus castellanus.
,An afternoon sky full of cumulus humilis clouds with little vertical growth indicates ____
weather. correct answers fair
The rate at which the actual air temperature decreases with increasing height above the surface is
referred to as the ____ rate. correct answers environmental lapse
Which of the following sets of conditions would produce a cumulus cloud with the lowest base?
correct answers air temperature 90°F, dew point temperature 60°F
In the above diagram, the environmental lapse rate (ELR) is: correct answers Conditionally
unstable
The difference between "moist" and "dry" adiabatic rates is due to the fact that correct answers
latent heat is released by a rising parcel of saturated air.
Absolute instability results when the environmental lapse rate is ____ the ____ adiabatic rate.
correct answers greater than; dry
A knowledge of air stability is important because it determines correct answers the vertical
motion of air.
Which cloud type below would most likely form in an unstable atmosphere? correct answers
cumulonimbus
Which environmental lapse rate represents the most unstable atmosphere in a layer of
unsaturated air? correct answers 11°C per 1,000 m
Most thunderstorms do not extend very far into the stratosphere because the air in the
stratosphere is correct answers stable.
, Inversions that form as air slowly sinks over a large area are called ____ inversions. correct
answers subsidence
If an air parcel is given a small push upward and it continues to move upward on its own accord,
the atmosphere is said to be correct answers unstable.
Dry adiabatic cooling and warming rates are approximately ____ of change in elevation. correct
answers 10 degrees Celsius for every 1000 m
An inversion represents an extremely stable atmosphere because air that rises into the inversion
will eventually become ____ and ____ dense than the surrounding air. correct answers colder;
more
The dry adiabatic lapse rate is the rate at which correct answers temperature changes in a rising
or descending parcel of unsaturated air.
Conditional instability depends on the condition of correct answers saturation.
The dry adiabatic rate is ____ greater than the moist adiabatic rate. correct answers always
In a sky filled with scattered cumulus humilis clouds, rising motions are found ____ the clouds
and sinking motions are found ____ the clouds. correct answers under; between
A rising parcel of air that does not exchange heat with its surroundings is an example of correct
answers an adiabatic process.
At Earth's surface, a rising saturated air parcel cools at the correct answers moist adiabatic rate.
When cloud elements become arranged in rows they are called cloud correct answers streets.
