science

Which choice correctly describes the waves in the electromagnetic spectrum?

The waves within the electromagnetic spectrum are all longitudinal waves which move at the same speed in a vacuum.
The waves within the electromagnetic spectrum are longitudinal and transverse waves which move at the same speed in a vacuum.
The waves within the electromagnetic spectrum are all transverse waves which move at different speeds in a vacuum.
The waves within the electromagnetic spectrum are all transverse waves which move at the same speed in a vacuum.
Is it the third one?

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  1. nope ... but close

    a prism "splits" light because the glass has an index of refraction
    ... different colors (frequencies) have different speeds ... in glass

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  2. whats the correct one then ?

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  3. The bands within the spectrum are made of fluctuating electric and magnetic fields and have a wide range of frequencies and wavelengths.

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