Multiple ______________ affects the plane's speed and direction?
lift
drag
forces
weight
How do the four forces of flight make an aircraft move?
a. up and down
b. sideways
c. like a roller coaster
d. faster and slower
Answers b and d
Answers a and d
During a flight, an airplane's weight _________________ changes as the aircraft burns fuel.
never
rarely
constantly
Magnitude is represented by a ________________.
symbol
letter
number
Direction is represented by
a. an arrow
b. plus sign (+)
c. minus sign (-)
d. all of the above
e. only b and c
The force of gravity's magnitude is how strong its pull and ________________ is toward the center of the earth.
direction
signal
strength
Lift is the downward force that enables an aircraft to raise off the ground and remain in flight.
True
False
The downward pull of the gravity on the aircraft is called weight.
True
False
Lift's magnitude does not depend on which one of these factors?
shape of airplane
size of airplane
speed of airplane
color of airplane
shape of wings
The bigger the total mass is, the smaller the magnitude of the weight.
True
False
Lift pulls the airplane in a direction perpendicular to the direction the airplane is moving.
True
False
Thrust is the force that propels an aircraft forward.
True
False
Drag is the force of resistance that works against the __________ movement of an aircraft through the air.
upward
forward
sideways
The force applied by the air molecules onto the airplane’s surfaces is the force of ___________.
lift
drag
weight
thrust
When an airplane moves through the air, the airplane pushes against the air, and the air pulls the airplane.
True
False
Thrust's magnitude depends on type of engine, ______________, and throttle setting.
size of engine
number of engines
shape of engine
Drag's magnitude does not depend on which of the following:
size of the aircraft
speed of the aircraft
number of engines
type of material used on the aircraft
properties of the air
shape of the aircraft
Thrust propels, or pushes, in the direction of motion. However, direction depends on how the engines are attached to the aircraft (perpendicular to the plane's body or on and angle).
True
False
Drag pushes _________________ the direction of the airplane's motion.
away from
against
upward
Drag is created by _______________ from the air and its resistance to the airplane's motion.