Science

[dadddarrell2]

Multiple Choice Question 6

A plane can fly upside down and still get its lift because of:

a the Bernouli effect

b the Coanda effect

c the angle of attack

d all of the above

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Question 10

RIGID SKELETONS HELP BIRDE TO FLY BY

a streamlining the birds structure

b holding the legs in position

c providing firm surfaces for the attachment of muscles

d changing into feathers

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QUESTION 11

HOW EFFECTIVELY A WING LIFTS A BIRD'S BODY IS INDICATED BY

a wing loading

b aspect ratio

c wingspan

d pitch

[Clanad]

Answer to Question 6, is All of the above...
Question 10, is C
Question 11, is A (However, effectiveness of a bird's wing is a subjective determination depending on the purpose of the species flight. Effectiveness in a gull's wing is entirely different than, say, a pheasant, but they would not be interchangeable as to desired end result)