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Sixth Grade (Grade 6) Light and Optics Questions

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Grade 6 Light and Optics
The lens that is thicker in the middle than at the edges is                 .
  1. convex
  2. concave
  3. light-reflecting
  4. corrective
Grade 6 Light and Optics
Which of the following is an example of refraction?
  1. Glass filled with water
  2. A periscope
  3. A mirror
  4. None of the above
Grade 6 Light and Optics
Which of the following is a mixture of all the colors of the rainbow, with different colors being the result of different wavelengths?
  1. infrared radiation
  2. visible light
  3. ultraviolet radiation
  4. scattering
Grade 6 Light and Optics
Which of the following is an example of reflection?
  1. Glass filled with water
  2. A waterfall
  3. A mirror
  4. A wall
Grade 6 Light and Optics


Which material is opaque?
  1. 1
  2. 2
  3. 3
  4. 4
Grade 6 Light and Optics
The natural agent that stimulates sight and makes things visible is                  .
  1. sound
  2. a convex mirror
  3. light
  4. none of the above
Grade 6 Light and Optics
Transparent is not able to be seen through.
  1. True
  2. False
Grade 6 Light and Optics
Choose whether the following objects are good or bad reflectors of light.
Good reflector Poor reflector
rough surface
silver
opaque objects
gold
metal spoon
mirror
plastic spoon
Grade 6 Light and Optics

Which material is translucent?
  1. 1
  2. 2
  3. 3
  4. 4
Grade 6 Light and Optics
In an object, light is scattered on surfaces that are                   .
  1. Dull and rough
  2. Dull and smooth
  3. Shiny and smooth
  4. Rough and metallic
Grade 6 Light and Optics


Which material is transparent?
  1. 1
  2. 2
  3. 3
  4. 4
Grade 6 Light and Optics
Light rays travel fastest in solids.
  1. True
  2. False
Grade 6 Light and Optics


What does this investigation show?
  1. Light travels in a straight line.
  2. Many light rays make up a beam.
  3. Light is bright.
  4. All of the above.
Grade 6 Light and Optics
White light can be separated into its colors by                 it through a prism.
  1. reflecting
  2. deflecting
  3. refracting
  4. absorbing
Grade 6 Light and Optics
Light shines clear through objects that are                .
  1. opaque
  2. translucent
  3. shiny
  4. transparent
Grade 6 Light and Optics
Light does not pass through an object at all that is                .
  1. opaque
  2. translucent
  3. shiny
  4. transparent
Grade 6 Light and Optics
When light strikes a convex lens, the light beams
  1. diverge or spread out.
  2. become wiggly lines.
  3. converge or become focused into one beam.
Grade 6 Light and Optics
What happens to green light and red light when they shine on a green leaf?
  1. Both are absorbed.
  2. Both are reflected.
  3. Green light is absorbed, and red light is reflected.
  4. Green light is reflected, and red light is absorbed.
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