P2 Revision Crossword

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Across
  1. 3. What is the common metal used to absorb X-ray radiation.
  2. 5. What type of materials emit gamma radiation.
  3. 7. Highest energy electromagnetic wave
  4. 8. What type of radiation makes water molecules vibrate
  5. 9. which molecule absorbs ultra-violet radiation in the atmosphere
  6. 11. Scientists can use computer models to understand what.
  7. 13. The burning of what by humans has lead to the increase in CO2 in the last 200 years.
  8. 14. name the process that removes CO2 from the atmosphere by plants
  9. 16. Ionising radiation can cause
  10. 17. name one of the green house gases
  11. 19. Number of photons x Energy of each photon
Down
  1. 1. Infrared and light can be transmitted down what.
  2. 2. The intensity of light does what with increasing distance
  3. 4. this signal varies between 0 and 1
  4. 6. The electromagnetic radiation with the largest wavelength
  5. 10. Light can be thought of either a wave or a particle which is called a what?
  6. 11. radio waves are normally used for
  7. 12. What is removed from an atom by ionising radiation
  8. 15. non ionising radiation can cause what.
  9. 18. This radiation is used for examining bones.