GEOLOGY

Detailed explanation-1: -Compressional stresses cause a rock to shorten. Tensional stresses cause a rock to elongate, or pull apart. Shear stresses causes rocks to slip past each other. Click on the buttons below to see an animation of these three types of stress.

Detailed explanation-2: -Compression: Stress which causes rock to squeeze or push against other rock. Tension: Stress which occurs when rock pulls apart or gets longer. Shear Stress: Stress which occurs when tectonic plates move past each other causing rock to twist or change shape. Fault: break in rock.

Detailed explanation-3: -Tension is the major type of stress at divergent plate boundaries. When forces are parallel but moving in opposite directions, the stress is called shear (figure 2). Shear stress is the most common stress at transform plate boundaries.

Detailed explanation-4: -There are three types of stress: compression, tension, and shear.

Detailed explanation-5: -Stress represents the action of a force or moment on a structural member. If the force pulls the member (tension) it results in a tensile stress; if the force pushes the member (compression) it results in compressive stress. Tensile stresses stretch a member and compressive stresses squeeze a member.