Changes

'''Flight''' is the capacity of self-propulsion through the atmosphere or through space, without contact with the ground. Most birds, many insects, the mammalian [[bat]] and [[flying fox]] and man-made contraptions (such as [[aircraft]]) are capable of true flight; although creatures such as [[flying fish]] merely leap.

'''Flight''' is the capacity of self-propulsion through the atmosphere or through space, without contact with the ground. Most birds, many insects, the mammalian [[bat]] and [[flying fox]] and man-made contraptions (such as [[aircraft]]) are capable of true flight; although creatures such as [[flying fish]] merely leap. When airplanes fly, air over the top surface moves faster than air under the bottom surface (of the wing). This causes the plane to be sucked upwards.

[[Category:Aviation]][[Category:Zoology]]

[[Category:Aviation]][[Category:Zoology]]