Bernoulli scheme

Okay kiddo, so you know how planes fly in the sky, right? Well, there is a really cool scientific idea called the Bernoulli principle that can help explain it!

Imagine you're blowing up a balloon. As you blow more air into the balloon, the air inside starts to push outward in all directions. This creates a force we call pressure which is measured in pascals (Pa). Pressure is like a push that pushes things around.

Now, let's say you have a piece of paper and you blow on it. The air from your breath is moving very fast and creates a lower pressure area just above the paper. That lower pressure area is like a pull that pulls things towards it. So, the paper gets pulled towards the faster-moving air, kind of like when you try to catch a ball that's flying by you. This is the Bernoulli principle at work!

In the same way, airplanes fly because of the Bernoulli principle. The wings of an airplane are shaped like a curved ramp, which helps air move faster over the top of the wing and slower underneath. This creates a lower pressure area over the wing and a higher pressure area underneath. This difference in pressure creates a force that pushes the airplane up into the sky, kind of like a bird flapping its wings to fly.

Pretty cool, huh? The Bernoulli principle also helps explain things like how airfoils work on race cars, how ships stay afloat in water, and even how water fountains shoot water up into the air!