Light and Matter Unit #2 (carmen:D)

define reflection

• light rays bounce off an object

• light rays are absorbed

• light rays are scattered

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define refraction

• light rays bend as they pass through an object

• light rays stay the same as they pass through an object

• light rays scatter as they pass through an object

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define transmission

• light rays can't pass through an object

• light rays can pass through an object

• some light rays can pass through an object

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define absorption

• light rays pass through material

• light rays are soaked up by material

• light rays are reflected by material

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what is an example of something scattering light

• mirror

• dust particles

• smooth plastic

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opaque (wood/cardboard)

• allows light to shine through

• allows some light to shine through

• allows no light to shine through

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what does light do when it hits a bumpy surface

• light is absorbed

• light scatters

• light is reflected

• light is transmitted

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what happens when light hits a smooth surface

• light reflects

• light scatters

• light is transmitted

• light is absorbed

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why does an apple appear red

• white light is absorbed, red light is reflected

• white light is reflected, red light is absorbed

• no light is transmitted or absorbed

• both forms of light are reflected

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what medium does light travel fastest through/ slowest through

• fastest = vacuum

  slowest = solid

• fastest = solid

  slowest = vacuum

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