The Ultimate L6 Physics Crossword

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Across
  1. 1. This type of wave is formed when a wave reflects off of a surface and interferes with itself
  2. 3. A transverse wave with vibrations in only one plane
  3. 4. The spreading of a wave when it passes through a gap or around a corner
  4. 5. This constant is the gradient of an energy frequency graph for an EM wave
  5. 7. The distance from the midpoint of a wave to the trough
  6. 9. The difference in distance travelled by two waves to reach the same point
  7. 10. A wave with displacement of particles perpendicular to the direction of motion
  8. 12. This is the minimum energy required to liberate an electron from a metal
  9. 13. The interference observed when two waves which are out of phase meet
  10. 14. A region of constructive interference on a standing wave
  11. 16. Light of a single wavelength or colour
  12. 19. A quantity with both magnitude and direction
  13. 20. A wave with displacement of particles parallel to the direction of motion
  14. 21. The number of waves per second
Down
  1. 1. The vector sum of the amplitude of two waves
  2. 2. This pattern is produced due to electrons moving between energy levels in atoms
  3. 5. The time for one complete wave
  4. 6. The interference observed when two waves which are in phase meet
  5. 8. This is the minimum frequency required to liberate an electron from a metal
  6. 9. When a photon of UV light is incident on a metal an electron is released
  7. 11. A quantum of light energy
  8. 15. The force required to accelerate 1kg by 1m/s2
  9. 17. The prefix x10^6
  10. 18. Force x perpendicular distance to the pivot