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light
mrs.pratts 4th grade gt class
Term | Definition |
---|---|
reflection | the bouncing of light off an object |
refraction | the change of direction of light because of a medium |
absortion | when a color goes into something and does not bounce back |
transparent | All light passes through an object |
translucent | Some light passes through a object |
opaque | No light passes through an object |
light | a form of energy |
cornea | the outside layer |
sclera | the white covering |
pupil | lets in light |
lens | focuses light |
muscle | opens up in dim light closes in bright light |
iris | attracts light |
focal point | light enter a curved glass at different angles then come together at the focal point |
tapetum | protects retina in nocturnel animals |
retina | upside down image here |
ultra-violet light | very fast light that can cause a sunburn |
infrared light | very slow light that gives off heat and is visible to some animals such as a Pit Viper |
wavelengths | measurement from Crest to Crest or trough to trough |
eyelid | a piece of skin that covers your eye |
vitreaous humor | transparent jelly of salts and protien |
eyelashes | hair that protects your eye |
tearduct | pink part closest to middle where tears come from |
optic nerve | sends picture to brain |
electricity | a form of energy |
insulator | does not let electricity through |
conductor | let's electricity through |
electro magnet | a magnet you can turn on and off |
closed circuit | complete circuit |
open circuit | not complete circuit |
series circuit | a circuit so that if one bulb goes out all of them do |
parallel circuit | a circuit so that if one bulb goes out the others don't |