Light Phenomenon

Key Stage 3 Science / Physics

Sample Question

Rainbows are spectacular light phenomena due to the refraction of light (twice) by the water molecule and the total internal reflection that happens in the between. However, the chances are that in reality two rainbows will appear and not just one! Baring in mind how the rainbow is formed, can you think the reason why a secondary rainbow exists as well?

  • Light is twice internally reflected within the water droplet
  • Light exiting the rainbow will trigger the formation of a secondary one
  • It is the same rainbow that due to the humidity appears shifted
  • Light is partly refracted and partly reflected when it enters the surface of the water droplet
  • It is just an optical illusion

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Quipper School UK Curriculum

Key Stage 3 Science