Geology Exam 4

Stress is measured in

A force acting on a body, or rock unit, that tends to change the size or shape of that body, or rock unit. Force per unit area within a body.

• Stress

• Strain

Stress can be difficult to measure in rocks that are

Change in size or shape of a body in response to stress

• Stress

• Strain

A stress due to a force pushing together on a body

• tensional stress

• compressive stress

• shear stress

Stress due to forces that tend to cause movement or strain parallel to the direction of the forces

• tensional stress

• compressive stress

• shear stress

A stress due to a force pulling away on a body

• tensional stress

• compressive stress

• shear stress

Shortening and flattening are results of

Stretching and breaking are results of

This image represents...

• tensional stress

• Shear strain

• compressive stress