Polarization is the orientation of electric fields in an electromagnetic wave. There are three types of polarization: linear, circular, and elliptical. Linear polarization forms a line, while circular polarization rotates in a circular motion. Elliptical polarization describes an elliptical shape. The document provides definitions and examples of different polarizations, including how linear polarization forms a straight line, circular polarization rotates, and elliptical polarization forms an ellipse. Activities are included to define and identify types of polarization.