Science// How we see


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  • Created by: issy_
  • Created on: 16-06-14 19:01
What produces light?
Luminous objects
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What does light reflect off?
Non - luminous objects
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What happens when light rays cross over?
The image turns upside down
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What does a lens do to light?
It refracts light
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What does the cornea do in the eye?
It focuses on objects
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What does the Iris do in the eye
It controls the amount of light entering the eye
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What does the retina do in the eye?
It forms the images for us to see
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What does the convex lens do in the eye?
Changes shape to focus light from objects at varying distances
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The retina's cells are sensitive to what?
Light
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Light energy is emitted by sources of what?
Light waves
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Anything that absorbs light energy is called what?
an absorber
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When is energy transferred?
When light waves hit a an absorber
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What happens when light waves hit a retina cell?
It causes a chemical and electrical reaction in special cells that send signals to the brain
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Other cards in this set

Card 2

Front

What does light reflect off?

Back

Non - luminous objects

Card 3

Front

What happens when light rays cross over?

Back

Preview of the front of card 3

Card 4

Front

What does a lens do to light?

Back

Preview of the front of card 4

Card 5

Front

What does the cornea do in the eye?

Back

Preview of the front of card 5
View more cards

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