1) Refraction happens when light______
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  • bends as it enters a new medium
  • bounces back when it hits a surface
  • by a substance
Which of these is not a type of lens?
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  • concave
  • convex
  • plane
Which one of these describes a lens that causes light to come to together at a single point?
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  • concave
  • opaque
  • convex
  • translucent
Choose the word or words that correctly describe each object and how light behaves in the situation.
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  • Opaque, reflection
  • Transparent
  • Translucent, passes through
  • a) Transparent, passes through, refraction
Identify the following image as or refraction.
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  • Refraction
  • Reflection
Identify the following image as or refraction.
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  • Refraction
  • Reflection
Which type of object blocks all light from going through?
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  • Translucent
  • Opaque
  • Transparent
Which type of object scatters light as it passes through an only allows part of the light to shine through?
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  • Opaque
  • Translucent
  • Transparent
Light shines clear through objects that are
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  • Translucent
  • opaque
  • Transparent
The color that you see is the color that is ____.
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  • refelcted
  • absorbed
If all light waves are reflected off an object, what color do we see?
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  • Red
  • White
  • Black
If all light waves are absorbed by an object, what color do we see?
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  • Blue
  • Black
  • White
Why does the straw appear to be bent?
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  • light is reflected
  • light is absorbed
  • light is turned
  • light is refracted
What do we call a material that light can travel through?
  • air
  • water
  • medium
  • pathway
What is a repeating disturbance or vibration that transfers or moves energy from place to place?  
  • Medium
  • Wave
  • Compression
  • Rarefaction
The illustration shows a light ray striking an object.In the illustration, the light ray striking the object is-
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  • absorbed
  • stopped
  • reflected
  • refracted
Why does the lower part of the child appear so much different in size from the upper part?
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  • The light rays that travel through water and then into air are refracted.
  • The light rays that travel through water and then into air are enlarged.
  • The light rays that travel through air and then into water are reflected.
  • The light rays that travel through air and then into water are reduced.
What is the angle of reflection equal to?
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  • The angle of refraction
  • The angle of incidence
  • The angle of absorption
  • The angle of light
What might explain why light travels in a straight line?
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  • If there is nothing to interfere with light waves, they should travel in a straight line.
  • Light waves will always travel in a straight line, even if they come into contact with another object.
  • Light waves don't travel in a straight line.
  • Light waves travel in a straight line because sound waves travel in a straight line.
What is the angle of incidence?
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  • The angle at which light bends in water.
  • The angle at which light hits a surface.
  • The angle at which light is absorbed by an object.
  • The angle at which light bounces off a surface.
According to the Law of reflection, a light ray striking a mirror
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  • continues moving through the mirror in the same direction
  • moves into the mirror at a slightly different angle
  • bounces off the mirror toward the direction it came from
  • bounces off the mirror at the same angle it hits.
Glass has a _____________ index of refraction than air.
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  • Equal
  • Greater
  • Less
  • Impossible to say
What is the angle of reflection (θr) in the image?
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  • 56o
  • 90o
  • 124o
  • 34o
Light bending as it passes through a rain drop is an example of...
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  • Refraction
  • Reflection
A beam of light bends when it passes from air into water, and more when it passes from water into glass. What can you conclude from this fact?
  • Air is denser than glass
  • Water is denser than glass
  • Glass is denser than water
  • Air is denser than water
A light ray is incident from water to air. Which of the refracted rays is correct?
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  • A
  • B
  • C
  • D
A ray of light travels from air into a glass block.Which diagram correctly shows the path of the ray through the glass block?
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  • A
  • B
  • C
  • D
Three students stand 2 m apart in front of a plane mirror which is 3 m long.Student Y is standing opposite the mid-point of the mirror.How many students can see the images of the other two?
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  • 0
  • 1
  • 2
  • 3
Density is...
  • the amount of mass in an object
  • the amount of space an object takes up
  • the amount of mass in a given space
  • the weight of an object
The line 90 degress through the refracting or reflecting surface is called?
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  • Medium
  • Normal
  • Incidence
  • Reflection
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