venturi effect

The Venturi effect is a phenomenon that happens when you move through a tube that narrows down in the middle. The Venturi effect is also called a 'throat'. As the air or water or other fluids move through the throat, they travel faster and create a lower pressure than the air or water outside the throat. This lower pressure causes things like suction, or pulling, and makes it easier to move things through the tube. Think of it like a vacuum cleaner - the vacuum cleaner creates a low pressure and sucks air or dirt towards it. The Venturi effect is the same, but instead of a vacuum cleaner, it's just a tube that's narrowing down.