How does an airplane fly if it's heavier than air?

An airplane can fly even if it’s heavier than air because its wings push the air down, and that makes the air push the airplane up, like when you jump on a trampoline.

When an airplane moves forward, its wings are shaped in a special way. The top of the wing is curved more than the bottom. As the airplane moves through the air, the air flows faster over the top of the wing and slower under it. This creates a difference in pressure, higher pressure underneath the wing and lower pressure on top.

This pressure difference pushes the airplane upward, just like how jumping on a trampoline makes you bounce up. It’s like having invisible hands lifting the airplane as it moves forward.

Even though an airplane is heavy, like a big truck full of people and stuff, its wings are really good at pushing air down fast enough to lift all that weight up. The faster the airplane goes, the stronger this upward push becomes. That’s why airplanes can fly high in the sky, even when they're heavier than air, because their wings do a super job of lifting them!