3.11 identify the order of the electromagnetic spectrum in terms of decreasing wavelength and increasing frequency, including the colours of the visible spectrum

3.11 identify the order of the electromagnetic spectrum in terms of decreasing wavelength and increasing frequency, including the colours of the visible spectrum

The list follows with increasing frequency and decreasing wavelength.
Radio Waves > Microwaves > Infra-red > Visible light > Ultraviolet > X-rays > Gamma rays
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Colours of the visible spectrum

There are seven colours in the visible spectrum: red, orange, yellow, green, blue, indigo and violet. Red has the longest wavelength and lowest frequency.

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