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Light and Sound

TermDefinition
Light form of electromagnetic energy that you can see; travels as waves; you need this to see colors
reflection the BOUNCING of light off an object (mirrors, water and foil reflect light)
refraction the BENDING of light as it passes from one material to another
concave lens lens that spreads light apart which makes objects seem SMALLER and farther away; "caves" in the middle
convex lens lens that brings light together which makes objects appear LARGER and closer; bulges in the middle
transparent objects that ALLOW ALL LIGHT to pass through (glass, clear plastic, water)
translucent objects that ALLOW SOME LIGHT to pass through (frosted glass, notebook paper, clothing, tissue paper, waxed paper)
opaque objects that BLOCK ALL LIGHT and create shadows (apple, book, brick, metal, mirror, your body, wood)
spectrum represents the range of colors you see when light is divided by a prism
prism can change the path of light; bends light and separates it into the visible color spectrum
absorb when an object takes in light; dark colored objects absorb the most light
sound form of energy that you can hear; travels as waves *can only travel through matter (solids, liquids, and gases). It cannot move through empty spaces.
sound waves vibrations in the air
vibrations fast back and forth movements that provide sound
frequency the number of vibrations in a sound in one second
pitch/speed how HIGH or LOW a sound is
volume/strength how loud or how soft a sound is
amplitude the height of a wave that determines how loud a sound is (how much energy it carries)
Shadow area where light does NOT strike
Created by: jenw365
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