Radiation and the Body Revision Quiz

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Across
  1. 3. the type of electromagnetic radiation with the longest wave length
  2. 5. describes objects that give off their own visible light (e.g. fire)
  3. 8. the opening in your eye that allows light to get in
  4. 10. _______ radiation that can cause sunburn but it is also needed by people so they can create Vitamin D (needed for strong bones)
  5. 11. the coloured part of your eye. It is a muscle that controls the size of your pupil
  6. 12. the transfer of energy away from a source in the form of waves or particles
  7. 14. when light bounces back off a material that it hits
  8. 15. the layer of cells at the back of the eye that senses light
  9. 16. The ____ is the main source of electromagnetic radiation for the earth
Down
  1. 1. the angle of incidence is _______ to the angle of relflection
  2. 2. the form of electromagnetic radiation that is detected by our eyes
  3. 4. describes objects that can only be seen when light if reflected off their surface (e.g. the moon)
  4. 6. nerve the part of the eye that send the signals to your brain
  5. 7. A very thin piece of glass that used to transmit light waves using total internal reflection. they can allow doctors to see inside their patients during surgery
  6. 9. the part of the eye that focuses light so that it falls on the back of the retina
  7. 13. the separation of white light into colours (ROY G BIV)
  8. 14. the bending of light when it passes from one medium to another (e.g. water to air)