Caterpillar D9

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/caterpillar-d9

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. How heavy is Caterpillar D9?Approximately 44 metric tons (49 short tons)
2. What is the machine type?Heavy track-type tractor
3. What is the manufacturer?Caterpillar Inc
4. How powerful is the D9?It has a gross power output of 354 kW (474 hp) and weighs about 49 short tons (44 metric tons). That gives it a lot of power to move earth.
5. Why does the D9 use tracks instead of wheels?Tracks give better traction and stability on rough ground like mud, rocks, or mine faces, so the D9 can work safely on many different terrains.

Track-type tractor: A heavy construction vehicle utilizing continuous metal tracks for locomotion, offering superior traction and stability on difficult terrain.
Blade articulation: The ability of the front blade to be angled, tilted, and raised/lowered, allowing for precise control in earthmoving and grading operations.
Compacted ground: Soil or earth that has been pressed together tightly, making it dense and difficult to penetrate without specialized equipment like a ripper.