Missiles are like really fast rockets that can fly through the air to hit a target like a bad guy or another airplane. They are made up of a few important parts that work together to make them go where they're supposed to go.
The first part is the guidance system. It's like the missile's brain and it tells it where to go. This brain can be made up of different things, like a computer or a GPS system, which helps the missile figure out where it is and where it needs to go.
The second part is the propulsion system. This is like the missile's engine, and it makes the missile go super fast. It can use things like fuel and engines to make it go.
The third part is the warhead. This is like the missile's head, and it's what hurts the bad guys or destroys the target. Depending on what the missile is for, it can have different kinds of warheads, like explosives or chemical agents.
So when a missile is launched, the guidance system tells it where to go, the propulsion system helps it get there really fast, and the warhead explodes or damages the target. Missiles can be used for lots of important things, like defending a country or attacking enemies, but they are also very dangerous and can hurt people if they're used in the wrong way.