dinosaur flight wings Flashcards
test
what is designed to maximize lift and minimize drag
a wing
what is ratio of the wing length to the wing width
aspect ratio l/w
what wing type has high aspect ratio
long narrow wings
what does high wing aspect ratio provide
high lift to drag
what are long narrow high aspect ratio wings ideal for?
gliding
which bird uses less energy long winged or short winged?
long winged birds
long wing birds use ……………… energy
less
what kind of place is long wing ideal for?
open spaces
which type of wings are structurally weak? long or short?
long wings are structurally weak
which wing type has difficulty taking off long or short?
long wings have difficulty taking off
what type of wing has low aspect ratio? length/width
a short wing
what to short wings (broad ,wide)
rapid power lift
what do short low aspect ratio wings provide?
high degree of maneuverability
What type of wing is a good glider?
high aspect long wing
what type of wing is quick lift highly maneuverable?
low aspect short wing
what type of environment are short wings ideal for?
one with numerous obstructions like forests tree branches
which type of wing is capable of sophisticated acrobatics?
short wing low aspect ratio
What two type of flyers developed?
- gliders 2. powered flight
What 4 physical characteristics are prerequisites for powered flight? hint (A-APE)
- air foil (wing)
- agile (fine muscle coordination
- Powerful muscles
- enhanced sensory capabilities
what does pterosaurs mean (translate)
winged reptiles
describe pterosaur neck
long neck
describe pterosaur body
short
describe pterosaur head
large head
describe pterosaur jaws
pointed
What was pterosaur hand like?
a. deep claws
b. 3 grasping fingers
c. elongated 4th digit (finger) supported wing membrane flap
what was pterosaur bones like
hollow so weighed less
Were hip bones free to move?
no fused together
What was the tail made of , cartilage?
no the tail was ossified bone
What new wrist element did pterosuar have?
pt eroid that supported wing membrane
What additional part did pelvis have?
prepubis supported gut
What strengthened the skeleton for landing?
fused vertebrae (dorsal) called a. notarium b. synascum
What are the two subdivisions of Pterosaur?
- rhamphorhynchiden 2. pterodactylia
The tail and 5th digit (claw),
jaw, nasal skull opening,
neck vertebrae bones hand bones (metacarpus )
2 subdivisions are all ?
different from the other
Which of the 2 pterosaur subdivision has short tail and short 5 th digit (claw)
pterodactylia
Which of the 2 ptersaur subdivision has long hand bones (metacarpus) and long neck vertebrae
pterodactylia?
which pterosaur subdivision has a jaw always full of teeth?
rhamphorynchidea
Which has a single(merged) nasal and prorbital opening
pterodactylia
