QUESTIONS AND CORRECT ANSWERS
ailerons - CORRECT ANSWERS the flaps on the wings that control the side to side roll of
the airplane
airfoil - CORRECT ANSWERS the special shape of a wing or other structure-curved on top
and flat on the bottom-that contributes to lift in flight
air pressure - CORRECT ANSWERS the amount of force per unit area exerted by the
molecules that make up air on the surfaces to bump into it
air resistance - CORRECT ANSWERS the force with which air resists the motion of an
object moving through it. It is also call drag.
angle of attack - CORRECT ANSWERS the angle of an aircraft relative to the air that flows
past it
Bernoulli's principle - CORRECT ANSWERS the scientific principle which states that
increasing the velocity of any fluid lowers its air pressure
blade - CORRECT ANSWERS the paddle-like sturctures that make up a propeller or rotor.
Blades are shaped like airfoils and work like spinning wings.
canopy - CORRECT ANSWERS the large, umbrella shaped part of a parachute that employs
air resistance to slow the fall of a sky diver or cargo