8.S.IV.1

General properties of waves Waves transfer energy by oscillation without transferring matter; matter disturbed by a wave returns to its original place. Wave properties: wavelength, frequency, speed, crest, trough, amplitude Two kinds of waves: transverse (for example, light) and longitudinal (for example, sound) Common features of both kinds of waves: Speed and frequency of wave determine wavelength. Wave interference occurs in both light and sound. Doppler effect occurs in both light and sound.