https://padlet.com/tati_ana_archie/5k1euxtavgvg Made with fortitude en-us 2016-09-26 18:33:53 UTC 2016-09-27 17:10:16 UTC hello@padlet.com tati_ana_archie https://padlet.com/tati_ana_archie/5k1euxtavgvg/wish/126480010     Birds can take flight because of the special shape of their wings.Bird wings are shaped so that the distance from the front to the back over the top of the wings is greater than the distance under the wing.If a bird is moving fast enough, the force from the pressure difference, which is called the lift force, equals or exceeds the weight of the bird and the bird is able to fly.When air flows over an airfoil,the air flows faster over the top of the wing and slower under the wing.The pressure difference causes an upward force called lift,which enables the bird to fly.Also,when looking at the amount of lift that a pair of wings can produce a few factors such as wing size,air speed,air density,and the angle of the wings.With those factors, act of come into play called angle of attack.Angle of attack is the angle between the wing and the direction of the oncoming wind.]]> 2016-09-26 18:35:12 UTC https://padlet.com/tati_ana_archie/5k1euxtavgvg/wish/126480010 tati_ana_archie https://padlet.com/tati_ana_archie/5k1euxtavgvg/wish/126488608 2016-09-26 18:55:32 UTC https://padlet.com/tati_ana_archie/5k1euxtavgvg/wish/126488608