A train is like a long line of storybooks! Each book is called a carriage, and they all get pulled by a strong helper called an engine. The engine is like the superhero of the train because it helps the train go forward.
Now, think about how a car has wheels that roll. Trains have metal wheels that also roll, but they roll on special tracks called rails. These rails help the train stay on the right path and go fast. So, the next time you see a train, remember the engine pulls the carriages on the metal wheels along the rails!