Waves

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Across
  1. 2. Line perpendicular to a surface. _______
  2. 4. Point with minimum amplitude in a standing wave. _______,
  3. 6. Number of cycles per second. _______,
  4. 7. Bending of light when it passes from one medium to another. _______,
  5. 9. Point with maximum amplitude in a standing wave. _______,
  6. 11. Vibrations are parallel to the direction of energy transfer. _______ wave,
  7. 12. Highest points on a wave. _______,
  8. 16. When two waves meet and cancel each other out. _______ interference,
  9. 20. Lowest points on a wave. _______,
  10. 22. Angle between an incident ray and the normal. Angle of _______,
  11. 23. Vibrations are perpendicular to the direction of energy transfer. _______ wave,
Down
  1. 1. When two waves meet and form a larger wave. _______ interference,
  2. 3. Distance between two successive crests or troughs. _______,
  3. 5. When two or more waves combine to form a new wave. Principle of _______,
  4. 8. Wave that propagates through a medium. _______ wave,
  5. 9. Maximum displacement from the rest position. _______,
  6. 10. Angle between a reflected ray and the normal. Angle of _______,
  7. 13. Waves traveling along a boundary. _______ waves,
  8. 14. Time taken to complete one cycle. _______,
  9. 15. When two or more waves combine to form a new wave. _______,
  10. 17. Single disturbance traveling through a medium. _______ pulse,
  11. 18. Angle of reflection equals angle of... Law of _______,
  12. 19. Wave pattern that appears to stand still. _______ wave,
  13. 21. Bending of waves around obstacles. _______,