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What is the key feature of visible light?
Eyes are able to detect wavelengths of electromagnetic radiation allowing us to see
Does visible light or ultraviolet radiation have longer wavelengths?
Visible light
What are the 7 colours of visible light?
Red, Orange, Yellow, Green, Blue, Indigo, Violet
Give 2 uses of visible light
Cameras
Optical fibres
How can ultraviolet radiation be harmful?
It can ionising atoms inside our cells, this leads to sun burn and sometimes cancer
Give 3 uses of ultraviolet radiation
Fluorescent light
To check for invisible markings
Tanning beds to get suntan
What is fluorescence?
Is when the ultraviolet light energy is absorbed then re-emitted as visible light
Note 
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