Question

rock that breaks under a lot of stress has undergone ____
a fracture
b plastic deformation
c elastic deformation
d shearing

Explanation:

To solve this, we analyze each option:

• Option a: Fracture is the process where a rock breaks (fractures) under stress, matching the description.
• Option b: Plastic deformation involves permanent shape change without breaking.
• Option c: Elastic deformation is temporary and the rock returns to original shape.
• Option d: Shearing is a type of stress, not the result of breaking.

Answer:

a. Fracture