Trains. Snapshot Picture Library

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      TRAINS

      People have been traveling on

       trains for almost two hundred

       years. This is much longer than

       they have been driving cars or

       flying in airplanes. The earliest

       trains roared along the tracks

       with the power of steam. Today,

       some of the latest high-speed

       trains don’t even have wheels!

      We use trains to take us to work,

       to visit family and friends, or to

       go on vacation. Trains also carry

       mail, food, and other cargo over

       long distances. Hop onboard to

       find out even more about trains.

To power a steam engine, burning coal heats water to create steam.

Some old trains run on narrow tracks. They are good at climbing steep hills.

      Today, diesel fuel powers

       most train engines.

An electric train connects to a live wire above the line or to a live rail alongside the regular track.