A plane needs air pressure under their wings to stay up in the air. As they move forward, the higher air pressure undernath their wings pushes them upward and gives them lift.
The smooth streamlined shape of the plane allows air to flow easily over its surface. This helps to reduce the drag caused by the air pushing the plane and allows it to move rapidly through the air.
Planes move forward using engines. This movement is called thrust. “Moving forward keeps a stream of moving air passing over the wings, which allows the plane to stay up in the air. If the engines fail, the plane will begin to descand very quickly.
The air above the wingmove faster so it is at a lower pressure than the air under the wing.
The air under the wing moves more slowly and is slightly squashed so it is at a higher pressure than the ir above the wing.
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