Waves and Radiation

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Across
  1. 2. The number of waves that pass a certain point each second
  2. 5. Another word for heat
  3. 8. Nothing – empty space
  4. 9. A type of Nuclear radiation consisting of 2 protons and 2 neutrons
  5. 11. A disease where cells multiply at a greater than normal rate
  6. 12. The number of waves that pass a certain point each second
  7. 15. The lowest energy, lowest frequency radiation that is used mainly for communication
  8. 17. The most damaging electromagnetic wave that has the highest frequency
  9. 18. A type of EM radiation that is a type of heat transfer
Down
  1. 1. A type of radiation that is quite dangerous that can be used to take images of the inside of the body.
  2. 3. A type of EM radiation that can cause sunburn and skin cancer
  3. 4. The distance between two equal parts of a wave
  4. 6. A type of Nuclear radiation consisting of an electron (or positron)
  5. 7. The act of making a neutral atom no longer neutral
  6. 10. A range of values for a specific item (e.g. colour)
  7. 13. A type of radiation used for communication that can also be used to heat foods
  8. 14. An atom that does not have a neutral charge
  9. 16. What is required to do some ‘work’