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Visible light is moved to the lighting areas using electromagnetic waves.3

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The first picture shows a smaller period, so there is a bigger frequency, and the second picture shows a bigger period, so there is a smaller frequency.

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The wave is travelling through paper(a medium) and is therefore an example of a Mechanical Wave.

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The wave is travelling through a medium besides a slinky - a sheet of paper.

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This(2nd) picture shows a wave with a smaller amplitude, and so there is less energy, shown by the size of the wave.

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The two waves have different wavelengths and different frequencies(the first wave has a greater frequency and a smaller wavelength). This results in the first wave travelling faster than the 2nd wave.

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The first wave traveled faster than the second wave, showing that a higher tension results in a higher wave speed, and vice versa for the second wave.