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Exam 5: Cloud Development and Precipitation

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Question 1

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Most rain at middle latitudes is produced by the ice crystal process. This is because ____.

A) clouds in these region have below-freezing temperatures at all levels but experience strong uplifts
B) clouds in these regions can extend into regions where air temperatures are below freezing
C) ice crystals evaporate more slowly than water droplets in clouds of these regions
D) most rain occurs during the winter in these regions

E) All of the above
F) A) and B)

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Question 2

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A conditionally unstable atmosphere is ____ with respect to unsaturated air and ____ with respect to saturated air.

A) unstable; stable
B) unstable; unstable
C) stable; unstable
D) stable; stable

E) B) and C)
F) C) and D)

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Question 3

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Suppose the rising air parcel is warmer and less dense than the air around it. In this case, the atmosphere is ____.

The largest snowflakes would probably be observed in ____ air whose temperature is ____ freezing.

What is an example of orographic clouds?

Which cloud type below would most likely form in an unstable atmosphere?

Cloud seeding using silver iodide only works in _____.

On average, the water equivalent of a fresh snowpack is ____.

Describe what a true blizzard is and how it differs from a ground blizzard.

Define and compare dry adiabatic rates and moist adiabatic rates.

As ice crystals and snowflakes fall from high cirrus clouds they are called VIRGA | FALLSTREAKS, and usually disappear as they change from ice into vapor.

How is graupel formed?

What types of clouds might we find forming in a stable atmosphere? Describe the characteristics of these clouds.

The combination of drifting and blowing snow, after falling snow has ended, is called a _____.

A parcel of air expands and cools, or compresses and warms, with no interchange of heat with its outside surroundings. What is this called?

Instructions: Choose one answer from each pair of selections. Does the collision and coalescence process work best when all the drops are the SAME or DIFFERENT sizes?

Instructions: Choose one answer from each pair of selections. Does accretion (riming) occur during the ICE CRYSTAL process or the COLLISION COALESCENCE process?

In a conditionally unstable atmosphere, the environmental lapse rate will be ____ than the moist adiabatic rate and ____ than the dry adiabatic rate.

The rate at which the temperature changes inside a rising (or descending) parcel of saturated air is called the ____.

Instructions: Choose one answer from each pair of selections. Would you expect a region in a "rain shadow" to have ABUNDANT or INFREQUENT precipitation?