Railway track

High school (ages 12+)
Transportation

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/railway-track

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the primary structural components?Rails, sleepers (ties), ballast, and subgrade
2. What is the material evolution of rails?From cast iron to high-carbon steel, enabling higher speeds and loads
3. What are the main parts of a railway track?Railway tracks are made of rails, sleepers (ties), ballast, and subgrade. Rails are the metal rails that trains run on. Sleepers keep the rails the right distance apart and help spread the weight to the ballast and ground.
4. Why are rails made of high‑carbon steel?High‑carbon steel is very strong and can handle the heavy weight and fast movement of trains. It helps keep the rails from breaking under the trains' loads.

Gauge: The distance between the inner edges of the two rails, measured at right angles.
Continuous Welded Rail (CWR): Long sections of rail welded together, eliminating expansion gaps for smoother travel.
Centrifugal Force: An apparent outward force experienced by an object moving in a curved path.
Subgrade: The compacted natural ground beneath the ballast, forming the foundation of the track structure.