This document contains a test review on waves in 2D that includes 20 questions covering topics like: 1. Drawing and labeling wavefronts, wave rays, and angles of incidence and reflection. 2. Describing how wave properties like wavelength, frequency, and speed change when a wave moves from deep to shallow water or vice versa, and examples of refraction. 3. Calculating fundamental frequencies, overtones, and wavelengths of vibrating strings based on their length and wave speed.