Rate the speed of light in the following from least to greatest. Solid, liquid, gas, vacuum. Explain why the speed of light changes.

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Grade: Education Subject: physics
Rate the speed of light in the following from least to greatest. Solid, liquid, gas, vacuum. Explain why the speed of light changes.
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The velocity, or speed, of light is determined by the density of the medium it is traveling through. The more dense a medium is, the slower light will travel. As a result, your answer should be something like this:

1. Solid
2. Liquid
3. Gas
4. Vacuum