how planes fly?

Planes fly by using lift, which is a force that is created when air flows over the wings of the plane. Airplane wings are designed with a curved surface on top and a flat surface on the bottom. When air passes over the curved surface, it moves faster than air that passes over the flat surface. This difference in air speed creates an area of low pressure above the wing and an area of high pressure below the wing, which creates a force called lift that pushes the plane up into the air. An example of lift can be seen when a paper airplane is thrown. The curved wings of the paper airplane cause air to move faster over the top of the wings than over the bottom, creating lift and a force that pushes the plane up into the air. To help an airplane fly, the pilot can adjust the angle of the wings to increase or decrease the lift. Pilots can also adjust the speed of the plane and the amount of thrust (the forward pushing force created by the engines). A combination of lift, thrust, and drag (the resistance created by air moving against the plane) helps the plane stay in the air. Fun fact: The world record for the longest flight without refueling is held by a Boeing 777, which flew for 11,664 miles!