how do birds wings create lift?

Answer 1

By flapping. Air molecules have substance. When you push down on them they push back up with an equal and opposite force (See Newton's Laws of Physics). So when the bird flaps its wings, it pushes down, air pushes and up and this creates lift. The shape of a birds wing also helps create lift. Because a bird's wing is curved on the top, air must travel faster along the top than the bottom to meet at the end. This creates a pressure difference above and below the wing creating lift.

Answer 2

They flap their wings downward, which gathers enough air in their feathers to create a downward force of the air, thus creating lift.

Answer 3

It's also do do with their shape, the bottom of the wing has more wind resistance than the top, which gives it lift. Like a plane....

Answer 4

It's all in the air pressure......the wind passing over the top of the wing decreases the air pressure on top of the wing, so that the air pressure underneath the wing is much greater, causing lift.

That's how my seventh grade science teacher explained it.

http://en.wikipedia.org/wiki/Bird_flight#The_wing

that might give a more detailed explanation.

Answer 5

they flap them fast and then they can take off

Answer 6

by the shape

Answer 7

their mothers tech them to then they try

Answer 8

they flap stupid