111-193

What is the effect of increasing airspeed on drag?

• Drag increases with the square of the airspeed

• Drag decreases with the square of the airspeed

• Drag remains constant regardless of airspeed

Which of the following correctly describes the relationship between temperature and altitude in the troposphere?

• Temperature remains constant with altitude

• Temperature increases as altitude increases

• Temperature decreases as altitude increases

• Temperature decreases in some layers and increases in others

• Temperature fluctuates randomly with altitude

What is the effect of a temperature inversion?

• The temperature decreases with altitude, causing smooth air

• The temperature increases with altitude, which can trap pollutants and cause poor visibility

• The temperature remains constant with altitude, causing turbulence

• The temperature fluctuates rapidly with altitude, causing weather instability

• The temperature remains constant, with no effect on aircraft performance

What is the relationship between air density and altitude?

• Air density remains constant with altitude

• Air density increases with altitude

• Air density decreases as altitude increases

• Air density increases as temperature decreases

• Air density increases as pressure decreases

What is the primary cause of turbulence in the troposphere?

• The uniform flow of air in the stratosphere

• The temperature inversion at higher altitudes

• The movement of air masses and thermal activity

• Wind shear in the mesosphere

• The jet stream in the thermosphere

Which of the following correctly describes the effect of altitude on the speed of sound?

• The speed of sound decreases only above 36,000 feet

• The speed of sound remains constant with altitude

• The speed of sound increases with altitude

• The speed of sound is only affected by temperature, not altitude

• The speed of sound decreases as altitude increases

What is the definition of the tropopause?

• The boundary between the mesosphere and thermosphere

• The layer of the atmosphere where the temperature decreases at the fastest rate

• The top of the stratosphere where temperature starts to increase with altitude

• The boundary between the troposphere and the stratosphere, where temperature stops decreasing with altitude

• The point where atmospheric pressure becomes negligible

What role does Bernoulli's Principle play in explaining the airflow over an aircraft wing?

• It helps to describe how the velocity of air changes over the wing surface, affecting the pressure distribution

• It explains the drag experienced by the aircraft at high speeds

• It defines the temperature variations around the aircraft's wing

• It helps in predicting the stall speed of an aircraft

• It explains the phenomenon of wake turbulence

What is the approximate temperature at the tropopause?

• 15°C

• -10°C

• 0°C

• -50°C

• -70°C

Which of the following factors has the greatest impact on the density of air?

• Density

• Temperature

• Humidity

• Wind speed

• Altitude