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WorksheetsUnderstanding Lift and Drag Forces
Total questions: 15
Worksheet time: 8mins
What is the main force that allows an aeroplane to rise off the ground during take-off?
Gravity
Lift
Drag
Thrust
Which force acts in the opposite direction to the motion of an aircraft, slowing it down?
Lift
Thrust
Drag
Weight
What is the name of the part of an aeroplane that helps control its up and down movement (pitch)?
Rudder
Elevator
Aileron
Flap
Which of the following best describes how lift is generated on an aeroplane wing?
Air moves faster above the wing, creating lower pressure above than below.
Air moves faster below the wing, creating higher pressure above.
The wing pushes air downwards only.
The engine creates lift directly.
What is the unit of force commonly used in Australia to measure lift and drag?
Pounds
Newtons
Kilograms
Joules
Which control surface is used to turn an aeroplane left or right (yaw)?
Elevator
Rudder
Flap
Spoiler
If the drag on an aeroplane increases, what must the pilot do to maintain the same speed?
Reduce thrust
Increase thrust
Lower the landing gear
Raise the flaps
Which of the following is NOT a type of stability in aircraft?
Longitudinal stability
Lateral stability
Directional stability
Rotational stability
What is the main purpose of the ailerons on an aeroplane?
Control pitch
Control roll
Control yaw
Increase lift
Which equation best represents the lift force ( L ) on a wing?
L=21ρv2SCL
L=m×g
L=F×d
L=P×V
What does the term "centre of gravity" refer to in an aeroplane?
The point where the most lift is produced
The point where all the weight is balanced
The point where the most drag occurs
The point where the engine is located
Which of the following would increase the drag on an aeroplane?
Smoother surface
Lower speed
Extended landing gear
Retracted flaps
If an aeroplane is stable, what will it do after being disturbed by a gust of wind?
Continue in the new direction
Return to its original position
Spin uncontrollably
Lose all lift
Which part of the aeroplane helps to keep it stable in the yaw direction?
Horizontal stabiliser
Vertical stabiliser
Flaps
Spoilers
What happens to lift if the speed of the aeroplane doubles, assuming all other factors stay the same?
Lift stays the same
Lift doubles
Lift increases four times
Lift halves
