are train cars attached to the wheels

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The wheels on each side of a train car are connected with a metal rod called an axle. This axle keeps the two train wheels moving together, both turning at the same speed when the train is moving. This construction is great for straight tracks.

Parts of a Train. A train is a series of rail cars coupled together and pulled by an engine known as a locomotive. The locomotive can pull or push the cars. It was originally powered by steam, but today, diesel or electric locomotives power most trains. Trains with large numbers of rail cars often require more than one locomotive.

Just like people buy specific passenger vehicles to accommodate their needs to transport passengers and cargo, a variety of rail cars exist to accommodate the needs of various freight shippers. How are the different rail car types built and what do they carry? Here your guide, complete with rail car photos and a rail car types infographic.

This special geometry is what keeps trains on the tracks. In this activity you will put different wheel shapes to the test to find out why the conical wheel is superior to other designs. The wheels on each side of a train car are connected with a metal rod called an axle.