Final answer:
Shear stress is the type of stress that distorts a body by pushing parts in opposite directions, while tensional and compressional stresses have different effects on rocks.
Explanation:
Shear stress is the type of stress that distorts a body by pushing parts of the body in opposite directions. Shear stress occurs when forces slide past each other in opposite directions, like at transform plate boundaries.
Tensional stress pulls rocks apart, causing them to lengthen or break apart. Compressional stress involves pushing rock masses together, leading to thickening of the material.
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