Visible Light & UV Light

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Description and Tags

Physics

Electromagnetic Waves

GCSE Physics

AQA

Waves

9th

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7 Terms

1
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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

2
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Does visible light or ultraviolet radiation have longer wavelengths?

Visible light

3
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What are the 7 colours of visible light?

Red, Orange, Yellow, Green, Blue, Indigo, Violet

4
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Give 2 uses of visible light

  1. Cameras

  2. Optical fibres

5
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How can ultraviolet radiation be harmful?

It can ionising atoms inside our cells, this leads to sun burn and sometimes cancer

6
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Give 3 uses of ultraviolet radiation

  1. Fluorescent light

  2. To check for invisible markings

  3. Tanning beds to get suntan

7
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What is fluorescence?

Is when the ultraviolet light energy is absorbed then re-emitted as visible light