P1 Key Word Crossword

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Across
  1. 3. Type of wave used in remote controls
  2. 7. Type of wave used to sterilise food
  3. 9. A type of wave where the direction of vibration is parallel to the direction of travel
  4. 11. Type of wave used to image bones
  5. 12. What happens when a wave spreads out after a gap
  6. 14. A type of wave where the direction of vibration is perpendicular to the direction of travel
  7. 17. What happens when a wave's energy is taken in by a surface
  8. 18. Type of wave used to see
  9. 19. What happens when a light wave hits a mirror
  10. 20. How many waves are emitted each second
  11. 21. The _____________ Spectrum
Down
  1. 1. What happens when a wave enters a denser medium
  2. 2. The name for the process of a wave travelling
  3. 4. Type of wave given out most by the Sun
  4. 5. Type of wave used for communication
  5. 6. The rate at which a wave travels
  6. 8. The name of the process of giving out a wave
  7. 10. The distance from one peak to the next
  8. 13. High energy waves are dangerous because they are ________
  9. 15. The distance from the midpoint of a wave to the peak or trough
  10. 16. Type of wave with the longest wavelength