Caterpillar D4

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-d4

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 machine type?Track-type tractor (compact bulldozer)
2. What is the manufacturer?Caterpillar Inc
3. How does the D4 move and push dirt?The D4 moves on long tracks that spread its weight over a big area. A diesel engine powers the tracks and a hydraulic system moves the front blade so the operator can lift, tilt, and push earth.
4. Why is the D4 smaller than other bulldozers?The D4 is lighter and smaller so it can fit into tight spaces like city streets or small job sites. Its smaller size also means it uses less fuel and is cheaper to keep working.

Track-type tractor: A heavy vehicle that moves on continuous metal or rubber bands, providing superior traction and stability.
Hydraulic systems: Mechanical systems that use pressurized fluid to generate force and motion, commonly used for operating bulldozer blades.
Diesel engine: An internal combustion engine that ignites fuel through compression, known for its high torque and fuel efficiency in heavy machinery.
Ground pressure: The amount of force exerted by a machine on the ground, which is lower with tracks than with wheels for the same weight.