1. Elemental distortion refers to deformations of elements from their ideal shape during finite element analysis. There are four main types: aspect ratio distortion, unevenly spaced nodes, angular distortion, and curved edge distortion. 2. Large distortions can occur due to large deformations involving large strains, transition between mesh densities, complex boundaries, automatic meshing, or materials weak in shear. Distorted elements reduce accuracy of the model. 3. The document provides detailed explanations and examples of elemental distortions to answer exam questions on finite element analysis topics including isoparametric elements, stiffness matrix derivation, and the finite element method procedure.