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Chapter 10
Light
28
Science
5th Grade
01/24/2013

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Term
concave
Definition
a mirror that curves inward and can make things look larger
Term
lens
Definition
a piece of glass or other transparent object that refracts light and produces an image
Term
black
Definition
absorbs all the colors of light
Term
mirror
Definition
any surface that can reflect light to form an image of an object
Term
ultraviolet rays
Definition
cause some objects to glow and can also be used to detect some kinds of bacteria
Term
reflection
Definition
happens when light bounces off an object
Term
plane mirrors
Definition
have a flat surface
Term
visible spectrum
Definition
made up of all the colors of light
Term
direction and speed of light
Definition
may change as light enters different mediums
Term
convex
Definition
mirrors that curve outward and make things look smaller
Term
opaque
Definition
objects that light cannot pass through
Term
laser
Definition
produces a powerful, thin beam of light that is only one color.
Term
electromagnetic waves
Definition
radio waves, microwaves, infrared waves, visible light, ultraviolet rays, x-rays, and gamma rays
Term
the primary colors of light
Definition
red, blue and green
Term
white
Definition
reflects all the colors of light
Term
the path light always travels in
Definition
straight line
Term
pigments
Definition
substances used to color other materials
Term
refraction
Definition
the bending of light as it passes from one medium into another
Term
wavelength of a transverse wave
Definition
the distance between two crests or two troughs
Term
speed
Definition
the distance that one wave travels in one second
Term
frequency
Definition
the number of waves that pass a certain point in one second
Term
light
Definition
the only electromagnetic wave that is visible to the human eye
Term
microwaves
Definition
used by radars
Term
radio waves
Definition
used for radio and television broadcasting
Term
elctromagnetic waves
Definition
waves that come from the sun and other sources
Term
transverse waves
Definition
waves that move perpendicular to the direction that the matter is moving
Term
infrared waves
Definition
what people, animals, and most objects give off
Term
reflection
Definition
when light bounces off an object
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