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