Question

Under which of the following conditions do rocks exhibit ductile deformation? A. low temperatures B. near Earth’s surface C. low pressures D. high pressure

Answer 1

Rocks exhibit ductile deformation under the condition of high pressure. Correct answer:D When a rock is subjected to increasing stress it passes through 3 successive stages of deformation. The second stage is Ductile Deformation -- wherein the strain is irreversible.

Answer 2

High Pressure

Further Explanation:

Stress is a force that acts on the material in order to produce the strain and Stress is a force that is applied over and particular area and therefore it has the unites in force per area. On the other hand, if we talk about pressure, then it is also stressed where the forces act equally from all the directions. Not to be mistaken, the Stress is not equal from all the directions as it depends on the pressure applied on every side and which may be different.  

There are three types of stress- Tensional stress, Compressional stress, and shear stress. How the material is behaving totally depends on many other factors and if we talk about confining pressure in particular, Then at high confining pressure, materials are less likely to fracture and that is because of the pressure of the surrounding tends to hide out the formation of these fractures.

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Answer Details:

Grade: High School

Chapter: Ductile Deformation

Subject: Physics

Keywords: Ductile deformation, stress, fractures, units, tensional stress, compressional stress, shear stress, confining pressure.