1) Beam shear refers to the tendency of one part of a beam to move vertically relative to an adjacent part. Shear diagrams provide a graphical representation of vertical shear along the length of a beam. 2) Bending moment refers to the tendency of a beam to bend due to applied forces. Moment diagrams show the bending moment along the length of a beam. 3) Examples show how to construct shear and moment diagrams for simple beams under various loadings, and how to determine maximum shear, locations where shear passes through zero, and maximum bending moment.