Toggle Navigation
Games
Blog
Class PIN
Join for Free
Sign in
Toggle Navigation
Games
PIN
Join for Free
Blog
Pricing
Contact us
Help center
Sign in
Study
Birds
0
%
0
0
0
Back
Restart
Forward movement by a flying animal or object. thrust or drag
thrust
Oops!
Okay!
Which one of these is an adaptation that help birds fly? hollow bones or feet
hollow bones
Oops!
Okay!
Birds flap more when they ride thermal currents? (true or false)
false
Oops!
Okay!
The force of air pushing against a flying animal or object . drag or lift
drag
Oops!
Okay!
If air causes drag on a bird, what causes drag on a fish.
Water
Oops!
Okay!
What is the forward movement of a bird called? Thrust or lift
Thrust
Oops!
Okay!
Air pressure under a flying animal or object that lifts it higher. lift or thrust
lift
Oops!
Okay!
Which one of these is an adaptation to help birds fly. feathers or hair
feathers
Oops!
Okay!
Adaptations help all animals fly.
False
Oops!
Okay!
Birds bones weigh less than people's bones.
True
Oops!
Okay!
Where is air pressure the greatest, under or over a bird's wing?
under
Oops!
Okay!
Using thermal currents is a good way for hawks to save energy. (true or false)
true
Oops!
Okay!
A hawk will gain lift when it is riding on a thermal current. (true or false)
true
Oops!
Okay!
Which one of these is an adaptation that helps birds fly? fat or strong muscles
strong muscles
Oops!
Okay!
Where is air pressure the lowest, over or under a birds wing?
over
Oops!
Okay!
A thermal current is a current of warm air. (true or false)
true
Oops!
Okay!
What are changes to an animal's body that help it survive. adaptations or drag
adaptations
Oops!
Okay!
Wings are the only things needed to fly.
False
Oops!
Okay!
Your experience on this site will be improved by allowing cookies.
Allow cookies