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Because the tops of the wings are convex and the underside not (ie they have a D-shaped cross section). Air flowing over the curved upper wing causes a suction effect which pulls the plane up. If it stopped moving forward it would crash to Earth. Test this out by holding a spoon by its handle between finger and thumb and moving it underside first towards a stream of water flowing from the kitchen tap (faucet). The water wll pull the spoon towards it.
What else can I help you with?
What layer of the atmosphere has planes in it?
Planes can go up to the STRATOSPHERE.
How do planes maneuver?
the wing flaps go up and down
Why are the fins on the submarines are used?
They are actually called "planes" on a submarine and allow it to maneuver underwater. Horizontal "planes" allow the submarine to go up/down, vertical "planes" allow the submarine to go left/right.
How long an air plane?
Air planes can go up to 20,000 ft.
Can planes go reverse?
Planes can in go in reverse on the ground with the use of thrust reverser's. Clam shell doors on the back of a jet engine that reverses the thrust and will actually back up the aircraft. All modern airliners have this capability.
How high do planes fly at?
Normal planes go at 40,500 feet from ground.
It is a space figure make up of planes?
Not necessarily. A sphere is a "space" figure, but is not made up of planes.
What are fighter planes?
they are planes that go above in the sky during war and drop bomb.....
How tall do planes go right now?
the plane that was highest were the spy-planes 60,000ft!!
Are inclined planes straight up and down?
no they are leaning which is why they are called inclined planes
Where are planes kept?
They go into hangers.
Can planes go to Antarctica?
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