Memory Game Waves BreakoutOnline version Review waves vocabulary by Kimberly Scott clear tissue that covers the front of the eye and refracts light the lens E material through which a wave travels R a wave in which the particles of the medium vibrate parallel to the direction of wave motion N cornea repeated disturbance or vibration that transfers or moves energy from place to place T vibration wave longitudinal wave transverse wave medium wave in which the vibration is at right angles to the direction in which the wave is traveling V mechanical wave a repeated back and forth or up and down motion R retina electromagnetic wave optic nerve the light sensitive inner surface on the back of the eye, containing light sensitive cells E a form of energy that can move through the vacuum of space and travels in a transverse wave A the nerve that carries messages from the retina to the brain for interpretation S waves that require a medium through which to travel S