how birds is fly explain
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Birds use their strong breast muscles to flap their wings and give them the thrust to move through the air and fly. Plane wings have a similar shape as bird wings, but instead of flapping their wings, we use engines to thrust them into the air and create the lift needed to fly.
Birds use their strong breast muscles to flap their wings and give them the thrust to move through the air and fly. Plane wings have a similar shape as bird wings, but instead of flapping their wings, we use engines to thrust them into the air and create the lift needed to fly.
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The pressure exerted down by fast moving air (red arrows) is less than the pressure exerted up by slow moving air (green arrows).
If you tried the paper activity from the front of this article, you might have been surprised by what happened. In most cases a person would think the paper would go down and not lift up when they blow air across the top.
It may not be what you would expect, but it is what birds and planes do to lift off the ground and fly. Blowing faster-moving air above the sheet paper lowered the air pressure above the paper. Now the air pressure below the paper is higher and creates lift. Lift does exactly what it sounds like; it lifts objects off the ground when everything is just right.
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