How do airplanes generate lift to fly, defying gravity?

Airplanes use moving air to push themselves up and stay in the sky, just like a toy car uses wheels to move on the floor.

When an airplane moves forward, its wings slice through the air. The shape of the wings, kind of curved on top and flat underneath, makes the air above the wing move faster than the air below it. Faster-moving air has less pressure, so the higher pressure beneath the wing pushes up, creating lift.

Think of it like this: if you run your hand through water in a bathtub, the water moves around your hand. If you angle your hand upward, the water will push your hand up, just like airplane wings push the whole plane up!

• The top of the wing is curved, so air has to travel farther over it.
• The bottom of the wing is flat, so air doesn’t have far to go.
• This difference in distance means the air above moves faster and creates less pressure.
• The slower-moving air below creates more pressure, pushing the plane upward.

So, even though gravity pulls airplanes down like a heavy backpack pulling you back, lift pushes them up, and that's how planes stay in the sky!