How Does Rocket Propulsion Basics Work?

A rocket moves by pushing stuff out really fast, just like when you blow up a balloon and let it go.

When a rocket goes whoosh into the sky, it's because it’s throwing fuel out of its back. This is called action and reaction, like when you jump on a trampoline, you push down, and the trampoline pushes you up! In a rocket, the fuel burns and turns into hot gas, which zooms backward. The rocket gets pushed forward in return.

Inside the rocket is something called combustion, that's just a fancy word for burning. The rocket has two things: one is fuel, like gasoline, and the other is an oxidizer, which helps it burn. When they mix together and burn, they create lots of hot gas that pushes out really fast.

This push is called thrust, it's what makes the rocket go up, just like how you get pushed forward when you blow up a balloon and let it fly away! A rocket moves by pushing stuff out really fast, just like when you blow up a balloon and let it go.

Inside the rocket is something called combustion, that's just a fancy word for burning. The rocket has two things: one is fuel, like gasoline, and the other is an oxidizer, which helps it burn. When they mix together and burn, they create lots of hot gas that pushes out really fast.

This push is called thrust, it's what makes the rocket go up, just like how you get pushed forward when you blow up a balloon and let it fly away!