Define what a thunderstorm is, and list what makes it severe?
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A local storm produced by cumulonimbus clouds and always accompanied
by lightning and thunder; winds greater than 50 knots (58mph) and/or more
than ¾ inches of hail and/or tornadoes
(Select all) Which of the following are types of airmass thunderstorms?
- Convective
- Nocturnal
- Orographic
- Supercell
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, - Convective
- Nocturnal
- Orographic
This stage of development is marked by updrafts and downdrafts, and is marked by
rain starting at the Earth's surface?
- Dissipation Stage
- Mature Stage
- Cumulus Stage
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Mature Stage
What causes mechanical turbulence and what can enhance it?
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Caused by friction between the earth and the wind near the surface; slows
the wind; can be enhanced by obstructions like hills, buildings or trees
Which local wind sets up during the day along coastal areas because the land is
warmer than the adjacent water, and causes an induced area of low pressure on the
land, and an area of high pressure over the water?
- Sea Breeze
- Water Breeze
- Land Breeze
- Heat Breeze
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, Sea Breeze
Which describes a drainage wind?
- Forms as air that is in contact with the ground is cooled and flows down hill after the
sun sets.
- Forms as air that is in contact with the ground is warmed and flows down hill after
the sun sets.
- Forms as air that is in contact with the ground warms and flows down hill after the
sun rises.
- Forms as air that is in contact with the ground is cooled and flows up a mountain
when the sun rises.
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Forms as air that is in contact with the ground is cooled and flows down hill
after the sun sets.
(Select all) What are the factors that determine the degree of roughness of
turbulence?
- Aircraft Speed
- Aircraft Brand
- Aircraft Size
- Aircraft Shape
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- Aircraft Speed
- Aircraft Size
, How can you avoid mountain wave turbulence?
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Know the clouds; know the wind direction and speed; start your climb 100
miles from turbulence; climb to an altitude 1 ½ times higher than the
mountain; approach mountains at a 45 degree angle
List and describe the three stages of thunderstorm development.
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a. Cumulus stage – marked by updrafts with vertical speeds of 2,000 to
3,000 feet per minute; air ascends, and moisture condenses
b. Mature stage – downdraft begins, and rain starts at the earth’s surface;
updrafts increase to 5 – 8,000 fpm; CB height 25 – 80,000 feet; virga can be
observed; anvil top indicated the direction the thunderstorm is moving
c. Dissipation stage – marked when the thunderstorm is dominated by
downdrafts; downdrafts and rain will end
(Select all) What conditions are needed for lee waves to form?
- Winds speeds of at least 75 knots
- A stable layer above the mountain top
- Winds speeds of at least 20 knots.
- An unstable layer above the mountain top
Give this one a try later!
Give this one a try later!
A local storm produced by cumulonimbus clouds and always accompanied
by lightning and thunder; winds greater than 50 knots (58mph) and/or more
than ¾ inches of hail and/or tornadoes
(Select all) Which of the following are types of airmass thunderstorms?
- Convective
- Nocturnal
- Orographic
- Supercell
Give this one a try later!
, - Convective
- Nocturnal
- Orographic
This stage of development is marked by updrafts and downdrafts, and is marked by
rain starting at the Earth's surface?
- Dissipation Stage
- Mature Stage
- Cumulus Stage
Give this one a try later!
Mature Stage
What causes mechanical turbulence and what can enhance it?
Give this one a try later!
Caused by friction between the earth and the wind near the surface; slows
the wind; can be enhanced by obstructions like hills, buildings or trees
Which local wind sets up during the day along coastal areas because the land is
warmer than the adjacent water, and causes an induced area of low pressure on the
land, and an area of high pressure over the water?
- Sea Breeze
- Water Breeze
- Land Breeze
- Heat Breeze
Give this one a try later!
, Sea Breeze
Which describes a drainage wind?
- Forms as air that is in contact with the ground is cooled and flows down hill after the
sun sets.
- Forms as air that is in contact with the ground is warmed and flows down hill after
the sun sets.
- Forms as air that is in contact with the ground warms and flows down hill after the
sun rises.
- Forms as air that is in contact with the ground is cooled and flows up a mountain
when the sun rises.
Give this one a try later!
Forms as air that is in contact with the ground is cooled and flows down hill
after the sun sets.
(Select all) What are the factors that determine the degree of roughness of
turbulence?
- Aircraft Speed
- Aircraft Brand
- Aircraft Size
- Aircraft Shape
Give this one a try later!
- Aircraft Speed
- Aircraft Size
, How can you avoid mountain wave turbulence?
Give this one a try later!
Know the clouds; know the wind direction and speed; start your climb 100
miles from turbulence; climb to an altitude 1 ½ times higher than the
mountain; approach mountains at a 45 degree angle
List and describe the three stages of thunderstorm development.
Give this one a try later!
a. Cumulus stage – marked by updrafts with vertical speeds of 2,000 to
3,000 feet per minute; air ascends, and moisture condenses
b. Mature stage – downdraft begins, and rain starts at the earth’s surface;
updrafts increase to 5 – 8,000 fpm; CB height 25 – 80,000 feet; virga can be
observed; anvil top indicated the direction the thunderstorm is moving
c. Dissipation stage – marked when the thunderstorm is dominated by
downdrafts; downdrafts and rain will end
(Select all) What conditions are needed for lee waves to form?
- Winds speeds of at least 75 knots
- A stable layer above the mountain top
- Winds speeds of at least 20 knots.
- An unstable layer above the mountain top
Give this one a try later!
