The Evolution of Flight in Birds

Question 1

feather

Answer 1

one of the many soft, light things that cover a bird’s body

Question 2

comparative

Answer 2

the form of an adjective or adverb that expresses a difference in amount, number, degree, or quality

Question 3

biomechanic

Answer 3

the study of the mechanical laws relating to the movement or structure of living organisms

Question 4

glide

Answer 4

make an unpowered flight, either in a glider or in an aircraft

Question 5

forelimb

Answer 5

either of the front limbs of an animal; a foreleg, wing, flipper

Question 6

aerodynamics

Answer 6

the science that studies the movement of gases and the way solid bodies, such as aircraft, move through them

Question 7

flap

Answer 7

to wave something, especially wings when or as if flying

Question 8

thrust

Answer 8

to push suddenly and strongly

Question 9

lift

Answer 9

to move something from a lower to a higher position

Question 10

ground-dwelling

Answer 10

any animal or plant that lives close to the ground

Question 11

maneuver

Answer 11

a movement or series of moves requiring skill and care

Question 12

sustained

Answer 12

continuing for a long time

Question 13

ostriches

Answer 13

a very large bird from Africa that cannot fly

Question 14

pheasants

Answer 14

a large bird with a long tail, often shot for food, or the meat of this bird

Question 15

hollow

Answer 15

having a hole or empty space inside

Question 16

vulnerable

Answer 16

able to be easily physically or mentally hurt, influenced, or attacked

Question 17

metabolic

Answer 17

relating to metabolism (= the chemical processes within the body required for life)

Question 18

offspring

Answer 18

the young of an animal

Question 19

susceptible

Answer 19

easily influenced or harmed by something