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ATSC 231 Block 3 review Questions
and Answers 100% Pass
A conceptual model for turbulence flow categorizes turbulence as either - ✔✔waves or eddies
Airplanes that have a greater velocity have greater momentum. - ✔✔true
The critical size range (or diameter) of eddies to be felt by aircraft as turbulence is between - ✔✔50 and
1500 ft
"The time rate of change of momentum of a body is equal to the force on the body" is a statement of -
✔✔Newtons Second Law of Motion
"A body remains at rest or in a state of uniform motion unless it is acted on by a force" is a statement of -
✔✔Newtons First Law of Motion
How would an upward directed force (such as a turbulence gust) affect the load factor of an airplane? -
✔✔it would increase the load factor
The additional load factor that results from vertical gusts is _____ proportional to the wing loading. -
✔✔inversely
Which load factor can be defined as the highest load factor that can be expected in normal operations,
and aircraft are designed to withstand these load factors without structural damage? - ✔✔flight (or limit)
load factor
Which factor does not determine the transition from laminar to turbulent flow in the atmosphere? -
✔✔relative humidity
Emily Charlene © 2025, All Rights Reserved.
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A compensating downward current of air results from rising thermals, but the downdrafts are over a
broad area and therefore weaker than the updrafts. - ✔✔true
____________ stability is the state of a column of air in the atmosphere in which an ascending (or
descending) air parcel always has the same temperature (density) as the surrounding environmental air -
✔✔Neutral
Which type of surface feature would heat-up the most and produce the strongest convective thermals? -
✔✔sandy or rocky wastelands
What atmospheric phenomena prevents thermals from rising higher and is the top of the convective (or
mixed) layer? - ✔✔capping inversion
What is the name given to the shallow, absolutely unstable layer of air in contact with the Earth's surface
which produces bubbles of vertically rising air? - ✔✔super adiabatic layer
One method used to describe thermals is the column or plume model. - ✔✔true
____________ stability is the state of a column of unsaturated air in the atmosphere when its lapse rate of
temperature is less than the dry adiabatic lapse rate, but greater than the moist adiabatic lapse rate. -
✔✔conditional
What are the requirements for Kelvin Helmholtz waves? - ✔✔strong stability and strong shear
How does the boundary layer change with increasing wind speed? - ✔✔the depth of the boundary layer
increases
A wave is often the precursor to shear turbulence. - ✔✔true
The magnitude of wind shear (usually measured in knots per distance) is called - ✔✔shear gradient
Moderate or greater turbulence can be expected if the surface winds exceed ___ knots over a flat surface. -
✔✔30
Emily Charlene © 2025, All Rights Reserved.
ATSC 231 Block 3 review Questions
and Answers 100% Pass
A conceptual model for turbulence flow categorizes turbulence as either - ✔✔waves or eddies
Airplanes that have a greater velocity have greater momentum. - ✔✔true
The critical size range (or diameter) of eddies to be felt by aircraft as turbulence is between - ✔✔50 and
1500 ft
"The time rate of change of momentum of a body is equal to the force on the body" is a statement of -
✔✔Newtons Second Law of Motion
"A body remains at rest or in a state of uniform motion unless it is acted on by a force" is a statement of -
✔✔Newtons First Law of Motion
How would an upward directed force (such as a turbulence gust) affect the load factor of an airplane? -
✔✔it would increase the load factor
The additional load factor that results from vertical gusts is _____ proportional to the wing loading. -
✔✔inversely
Which load factor can be defined as the highest load factor that can be expected in normal operations,
and aircraft are designed to withstand these load factors without structural damage? - ✔✔flight (or limit)
load factor
Which factor does not determine the transition from laminar to turbulent flow in the atmosphere? -
✔✔relative humidity
Emily Charlene © 2025, All Rights Reserved.
, 2|Page
A compensating downward current of air results from rising thermals, but the downdrafts are over a
broad area and therefore weaker than the updrafts. - ✔✔true
____________ stability is the state of a column of air in the atmosphere in which an ascending (or
descending) air parcel always has the same temperature (density) as the surrounding environmental air -
✔✔Neutral
Which type of surface feature would heat-up the most and produce the strongest convective thermals? -
✔✔sandy or rocky wastelands
What atmospheric phenomena prevents thermals from rising higher and is the top of the convective (or
mixed) layer? - ✔✔capping inversion
What is the name given to the shallow, absolutely unstable layer of air in contact with the Earth's surface
which produces bubbles of vertically rising air? - ✔✔super adiabatic layer
One method used to describe thermals is the column or plume model. - ✔✔true
____________ stability is the state of a column of unsaturated air in the atmosphere when its lapse rate of
temperature is less than the dry adiabatic lapse rate, but greater than the moist adiabatic lapse rate. -
✔✔conditional
What are the requirements for Kelvin Helmholtz waves? - ✔✔strong stability and strong shear
How does the boundary layer change with increasing wind speed? - ✔✔the depth of the boundary layer
increases
A wave is often the precursor to shear turbulence. - ✔✔true
The magnitude of wind shear (usually measured in knots per distance) is called - ✔✔shear gradient
Moderate or greater turbulence can be expected if the surface winds exceed ___ knots over a flat surface. -
✔✔30
Emily Charlene © 2025, All Rights Reserved.
