A coal train is a long line of train cars that are filled with coal. Coal is a black or brown rock-like substance that we use to make electricity, heat our homes, and power machines.
The train cars are attached to each other by special hooks called "couplers." The engine at the front of the train pulls all of the cars behind it, while the conductor inside the engine controls how fast or slow the train goes.
Coal trains usually travel on special train tracks that are separate from regular roads. During their journey, the train goes through different locations like mountains, forests and tunnels.
When the train arrives at its destination, the coal is unloaded from the train cars and sent to factories or power plants where it will be burned to create energy.
Coal trains can be very big, and sometimes they can be a mile long or even longer! They are important because they help transport a very important resource that we use every day.