Let's talk about trains! A train is a big, long vehicle that travels on special tracks called rails. These rails are made of strong metal, and the train has round metal wheels that help it roll smoothly along the tracks.
The front of the train is called the engine. The engine is like the train's heart because it gives the train power to move. The engine pulls a line of carriages behind it. The carriages are like little rooms that can hold people and things.
So, when the engine pulls the carriages, they all move together on the rails. And that's how a train goes chugging along its journey!