WX201 Chapter 1 Exam Questions with 100%
Correct Answers.
When a saturated air parcel is lifted in the atmosphere is ____at the _____adiabatic lapse
rate.
Cools, Moist
Conditional instability occurs whenever the environmental lapse rate is______the moist
adiabatic rate and the dry adiabatic rate.
Between
An inversion represents an extremely stable atmosphere because air that rises into the
inversion will eventually become_______ and more dense than/as the surronding air.
Colder
The atmosphere is always absolutely stable when the ______ is less than the moist adiabatic
rate.
Environmental Lapse rate
The lapse rate within a temperature inversion is ______ and that layer is
considered_______.
Negative, absolutely stable
The difference between the "moist" and "dry" adiabatic rates is due to:
The fact that latent heat is released by a rising parcel of saturated air.
Given the DALR=10 c/km, the MALR=6 C/Km and the environment lapse rate (ELR) is 3
C/Km. In this case, atmosphere is
Absolutely Stable.
Which of the following is not a mechanism primarily responsible for most clouds observed?
Differences in air pressure caused by a rapidly increasing moist adiabatic rate in a thermal.
, An example of orographic clouds would be_________.
Forming on the windward slope of mountain
Air that_____ vertical displacements is considered to be stable
Resists
______occurs when snow within clouds melts on the way down, but encounters a shallow
sub-freezing layer before it hits the surface
Freezing rain
The bottom of a large raindrop falling from the sky is flat because:
there is a greater force on the bottom than the top of the drop
Precipitation with the greatest size (diameter) is______.
A hailstone
Which cloud type will only produce precipitation by the collision-coalescence process,
where -15 C is the temperature that separates "warm" and "cold" clouds?
A thick, warm cumulus cloud.
A fundamental principle underlying the Bergeron process is
The saturation vapor pressure around ice is lower than that around supercooled water in a cloud
A typical raindrop is about_____ than a typical cloud droplet.
One hundred times larger
The temperature at the ground is below freezing and there is a temperature inversion
leading to a relatively thick (greater than 1000 feet) layer of air above freezing higher up in
the atmosphere. Which of the following types of precipitation would you most likely expect
given these conditions?
Sleet (ice pellets)
At temperature of -15 oC in a cloud, one would commonly have
Correct Answers.
When a saturated air parcel is lifted in the atmosphere is ____at the _____adiabatic lapse
rate.
Cools, Moist
Conditional instability occurs whenever the environmental lapse rate is______the moist
adiabatic rate and the dry adiabatic rate.
Between
An inversion represents an extremely stable atmosphere because air that rises into the
inversion will eventually become_______ and more dense than/as the surronding air.
Colder
The atmosphere is always absolutely stable when the ______ is less than the moist adiabatic
rate.
Environmental Lapse rate
The lapse rate within a temperature inversion is ______ and that layer is
considered_______.
Negative, absolutely stable
The difference between the "moist" and "dry" adiabatic rates is due to:
The fact that latent heat is released by a rising parcel of saturated air.
Given the DALR=10 c/km, the MALR=6 C/Km and the environment lapse rate (ELR) is 3
C/Km. In this case, atmosphere is
Absolutely Stable.
Which of the following is not a mechanism primarily responsible for most clouds observed?
Differences in air pressure caused by a rapidly increasing moist adiabatic rate in a thermal.
, An example of orographic clouds would be_________.
Forming on the windward slope of mountain
Air that_____ vertical displacements is considered to be stable
Resists
______occurs when snow within clouds melts on the way down, but encounters a shallow
sub-freezing layer before it hits the surface
Freezing rain
The bottom of a large raindrop falling from the sky is flat because:
there is a greater force on the bottom than the top of the drop
Precipitation with the greatest size (diameter) is______.
A hailstone
Which cloud type will only produce precipitation by the collision-coalescence process,
where -15 C is the temperature that separates "warm" and "cold" clouds?
A thick, warm cumulus cloud.
A fundamental principle underlying the Bergeron process is
The saturation vapor pressure around ice is lower than that around supercooled water in a cloud
A typical raindrop is about_____ than a typical cloud droplet.
One hundred times larger
The temperature at the ground is below freezing and there is a temperature inversion
leading to a relatively thick (greater than 1000 feet) layer of air above freezing higher up in
the atmosphere. Which of the following types of precipitation would you most likely expect
given these conditions?
Sleet (ice pellets)
At temperature of -15 oC in a cloud, one would commonly have
