How do trains work?

Answer

A train is a group of connected railroad cars that are powered by steam, diesel fuel, or electricity. A train runs on a railway or a path of rails. The railway contains a pair of parallel metal rails. Switches are intersections that move trains from one stretch of track to another.
2 Additional Answers
Chug Chug pop goes the whistle! A train runs on electric engine or on diesel. There used to steam rails too in the older days, you can now see those train engines in the museum You can find more information here: http://www.ecst.csuchico.edu/˜davidt/trainworksheet.htm
Trains work of energy, which is supplied from a generator in the form of electricity. The train started as a locomotive which coal was the source of energy, then years later locomotive engine where replaced by diesel engine.
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