Effects on Performance Questions

What is the standard sea level pressure?

• 1013.2"Hg

• 29.92 millibars

• 29.92"Hg

• 1013.2°C

Which of the following indicates that bad weather is approaching?

• Rising pressure

• Falling pressure

• Stable pressure

• Decreasing air density

What happens to aircraft performance as air density decreases?

• Performance improves

• Performance decreases

• There is no effect on performance

• Performance remains the same as long as the temperature is constant

What effect does an increase in humidity have on air density?

• Increases air density

• Has no effect on air density

• Decreases air density

• Air density stays constant

What type of wind conditions are typically found on the leeward side of a mountain?

• Smooth and upward

• Calm and predictable

• Increasingly turbulent

• Constant and stable

Low-level wind shear is a dangerous hazard because it involves:

• Slow, gradual changes in wind speed over a large area

• Sudden, drastic changes in wind speed and/or direction over a small area

• Consistent wind speed increases with altitude

• Gentle updrafts that help aircraft climb

Stable air leads to which of the following conditions?

• Clear skies and smooth flying conditions

• Thunderstorms and heavy rain

• Severe turbulence

• Extensive vertical clouds

What is a temperature inversion?

• When the temperature decreases with altitude

• When the temperature remains constant with altitude

• When the temperature increases with altitude

• When the air temperature is lower than the dew point

What should an unmanned aircraft operator do if they observe cumulonimbus clouds?

• Continue flying as usual

• Increase altitude to avoid the clouds

• Suspend flight operations and avoid flying

• Fly through the clouds for smoother air

What type of cloud is associated with strong turbulence and should be avoided by unmanned aircraft operators?

• Stratocumulus

• Cirrus

• Standing lenticular altocumulus

• Nimbostratus