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Study Guide for Science Light Test

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
What is most important source of natural light?   sun  
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What kind of material is a good reflector of light?   smooth, light colored, shiny  
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Why can we see things that do not send out light waves?   the light is reflecting off of it  
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When sunlight strikes snow, some of the sunlight is absorbed. What happens to the light energy that is absorbed?   it changes to heat energy  
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In the summer, why is the blacktop driveway hotter than the grass?   light rays absorbed by the blacktop are changed to heat energy  
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How does light pass through a translucent object?   bend in all different directions (refract)  
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How does light travel through the a flat transparent material?   in a straight line  
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What is Refraction?   bending of waves as they travel at an angle from one medium to another  
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What happens to an image when light rays pass through a convex lens?   it is upside down  
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Which reflects more light? A yellow piece of paper or a black piece of paper?   yellow  
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True or False: White light contains all the color in the visible spectrum   True  
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What are the colors of the spectrum in order?   Red, Orange, Yellow, Green, Blue, Indigo, Violet  
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Why can't you see your reflection in a wooden door?   The light is not reflected directly back at you. The light waves scatter and bend at different angles.  
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What are two sources of light?   natural and artificial  
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What is it called when light bounces back from a surface?   reflection  
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How much light does a transparent object let pass through?   most  
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What is an example of a transparent object?   window  
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How much light does a translucent object let pass through?   some  
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What is an example of a translucent object?   wax paper  
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How much light does a opaque object let pass though?   none  
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What is an example of a opaque object?   wood  
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What colors of light does a black shirt absorb?   All  
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What colors of light does a white shirt absorb?   None  
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Why does a pencil appear fatter and broken when put into a glass of water?   The water is refracting light rays from the pencil.  
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What color do you get when red and blue light are mixed together?   majenta  
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What color do you get when red and green light are mixed together?   yellow  
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What color do you get when blue and green light are mixed together?   cyan  
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What, in your eye, adjusts to focus an image?   lens  
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What, in your eye, does the lens focus the image on?   retina  
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What type of lens does your eye contain?   convex  
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Where is the retina located in your eye?   the back  
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What is the part of your eye that is colored and regulates the size of the pupil by contracting and expanding around it?   iris  
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What connects your brain to your retina?   optic nerve  
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What is the round opening in your eye that controls the amount of light that goes onto the retina?   the pupil  
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What is the white part of your eye called?   the sclera  
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