Train noise

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/train-noise

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 sound sources?Rolling contact between wheels and rails, aerodynamic effects, and mechanical components
2. What is the mitigation technologies?Noise barriers, low-noise wheel-rail interfaces, and aerodynamic design improvements are key strategies
3. What makes a train make a "clickety-clack" sound?When a train wheel passes over the gaps in the rail joints, it creates a series of little impacts that produce the familiar clickety-clack noise.
4. Why do trains sound louder when they go faster?At higher speeds, the air rushing around the train and through its vents makes more noise, so the train sounds louder.

Acoustic Phenomenon: A sound or series of sounds with specific characteristics and origins, studied in physics.
Thermal Expansion: The physical property of matter to change volume in response to temperature variations, necessitating engineering allowances in structures like railways.
Noise Pollution: The presence of unwanted or disturbing sound in the environment, with potential adverse effects on health and well-being.