Aerodynamics Quest M C Q

1. The amount of lift depends on these things:
a) the wing's airfoil shape  
b) angle of attack 
c) speed of flight
d) All of the above

2. The top surface of the wing has more camber than the bottom surface, the air flows faster over the top of the wing than it does underneath. The difference in air pressure above and below the wing causes
a) Lift
b) Drag
c) Thrust
d) both lift and Thrust

3.Long slender wings like those on a sail-plane are 
a) low AR
b) medium AR
c) high AR
d) AR unpredictable.

4. High speed air-planes ,like modern jet fighters have - 
a) no sweep
b) lower sweep
c) greater sweep
d) either b) or c)

5. Air density is measured by how tightly compressed the molecules are. When there are more molecules in the air (greater density), 
a) it is easier to generate lift
b) it is more difficult to generate lift
c) unpredictable
d) no lift will produce

6. The amount of drag depends on -
a) size of the aircraft 
b) details of the shape and smoothness of the aircraft 
c) lifting efficiency of the wing 
d) All of the above