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27 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Convex lenses in focal lengths |
Back (Definition) |
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What is opaque |
Lets no light through |
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Materials can ___, ____, or ____ light |
Transmit, absorb or reflect |
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What is a shadow |
When an opaque object absorbs light rays |
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Shadows demonstrate that light travels in _______ lines |
Straight |
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Shadows demonstrate that light travels in _______ lines |
Straight |
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What is a ray diagram |
Shows how distance from the light source affects size of the shadow an object makes |
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What is reflection |
When light bounces off an object |
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What is the incoming ray of light called |
Incident ray |
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What is the normal |
An imaginary line perpendicular to the surface |
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Angle of incidence us measured from the normal to the ____ ray |
Incident |
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Angle of reflection is measured from normal to the _____ ray |
Reflected |
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When light travels from one transparent medium to another, it ____ _____ |
Changes speed |
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The bending of light due to a change in speed is called |
Refraction |
Refraction |
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What is a convex mirror |
Mirror that curves inward |
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What is a concave lens and an example |
Thinner in the middle than at the edge. They cause light rays to diverge and they produce images that are upright and smaller than the object
Example: eyeglasses |
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What are convex lens |
Thicker in the middle than at the edge. cause light rays to converge
Example: magnifying glass |
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What is a lens |
Piece of transparent material that can bend, or refract light rays to help firm a focused image |
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What is a concave lens |
Thinner in the middle than at the edge. They cause light rays to diverge and they produce images that are upright and smaller than the object
Example: eyeglasses |
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What are convex rays |
Thicker in the middle than at the edge. cause light rays to converge
Example: magnifying glass |
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Distance from the centre of the lens to the focal point is called |
The focal lenght |
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Convex lenses in focal lengths |
Back (Definition) |
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What is a smooth flat mirror called |
Plane mirror |
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what do plane mirrors form |
Image that is upright and appears to be as far behind the mirror as the object is in front of it |
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What is a concave mirror |
A mirror that curves inward |
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Two characteristics formed by a convex mirror |
Objects appear smaller than they are and more objects can be seen in a convex mirror than a plane mirror |
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What is a convex mirror |
Mirror that curves outward |
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