Introduction to Flight 10 Units 1-6 Pre-Assessment

Increasing humidity _________.

• raises air density

• lowers air density

• eliminates air density

• does not change air density

Forces are vectors because they have __________.

• weight and magnitude

• direction and magnitude

• weight and direction

• mass and volume

Which best defines viscosity?

• The resistance an object experiences as it moves through a fluid

• The ability of any fluid to change shape

• The velocity at which air moves over a surface

• The resistance of a fluid to a change in shape or a change in its motion

An airplane said to be inherently stable will ____________.

• require less effort to control

• be difficult to stall

• not spin

• tend to return to its original attitude

An airplane said to be inherently stable will ________. Select all that apply.  (2)

• require less effort to control

• be difficult to stall

• not spin

• tend to return to its original attitude

Relative to a changing angle of attack, which of the following is true?

• A decrease in angle of attack will increase the pressure below the wing and increase drag.

• An increase in angle of attack will decrease the pressure above the wing and increase lift.

• An increase in angle of attack will increase the pressure above the wing and increase drag.

• A decrease in angle of attack will increase lift.

Which of the following is part of the empennage of a fixed-wing aircraft? Select all that apply. (3)

• rudder

• landing gear

• vertical stabilizer

• horizontal stabilizer

Which of the following are reasons why composite construction materials are used to build aircraft? Select all that apply. (2)

• They cost less than steel.

• They are undetectable.

• They are lightweight.

• They are durable.

• They are government-supplied.

Which safety measures are taken if the cabin of an airliner becomes depressurized? Select all that apply. (2)

• The pilot would descend the airplane to a lower altitude.

• A safety hammer would be used to knock out a rear window.

• Passengers would be told to remain seated in a crouched position.

• Oxygen masks would be deployed.

• The crew would increase the temperature of the cabin.

Which UAS material is inexpensive, cost-effective to replace, very rigid, yet difficult to repair?

• Composite

• Plastic

• Metal

• Foam