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Science Test

Chapter's 17+18 vocab

TermDefinition
concave lens is thicker at the edges than in the middle
cone type of cell in the retina of the eye that responds to colors
convex lens is thicker in the middle than at the edges
lens transparent object with at least one curved side that causes light to change direction
refraction bending of a wave as it changes speed while moving from one medium to another
absorption tansfer of energy by a wave to the medium through which it travels
electromagnetic radiation energy carried through space or matter by electromagnetic waves
reflection bouncing of a wave off a surface
transmission passage of light through an object
concave mirror curves inward, like the bowl of a spoon
convex mirror curves outward, like the back of a spoon
diffuse reflection the reflection of light from a rough surface
focal length distance along the optical axis from the mirror to the focal point
focal point where parallel light rays converge after reflecting from a mirror
Law of reflection when a wave is reflected from a surface, the angle of reflection is equal to the angle of incidence
regular reflection the reflection of light from a smooth, shiny surface
wavelength the distance between 2 consecutive peaks on a wave
frequency the number of waves that pass by a certain point in one second
normal a line that is perpendicular to a reflecting surface
incident ray the ray of light that travels towards the reflecting surface
reflected ray the ray of light that bounces off a surface
angle of incidence the angle that forms between the incidence ray and the normal
angle of reflection the angle that forms between the reflected ray and the normal
optical axis a straight line that is perpendicular to the center of the mirror
prism a triangular piece of glass that refracts white light when it enters and leaves the prism, causing the colors of light to spread out
rod type of cell in the retina of the eye that responds to low light
Created by: J Dilly
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