Waves- Sound and Light Crossword

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Across
  1. 5. electromagnetic radiation with frequency just lower than visible red light
  2. 7. the kind of primary colors that include magenta, cyan, and yellow
  3. 11. for a wave or a vibration, the maximum displacement on either side of the equilibrium (midpoint) position
  4. 13. the SI unit of frequency
  5. 14. the kind of primary colors that include red, green, and blue
  6. 16. the study of light properties
  7. 19. for a vibrating body, the number of vibrations per unit time; for a wave, the number of crests that pass a particular point per unit time
  8. 21. the exhibition of both wave nature and partile nature of light
  9. 22. the time required for a vibration or wave to make one complete cycle
  10. 24. the last name of the scientist responsible for explaining the particle model of light and the photoelectric effect
  11. 27. the setting up of vibrations in an object by a vibrating source
  12. 29. the subjective impression about the frequency of light
  13. 30. the separation of light into colors arranged by frequency
  14. 31. when light is incident on a rough or granular surface
  15. 32. a wave in which the medium vibrates in a direction parallel (longitudinal) to the direction in which the wave travels
  16. 33. a dramatic increase in the amplitude of a wave that results when the frequency of forced vibration matches an object's natural frequency
  17. 35. the study of sound properties
  18. 36. when a surface is so smooth that it reflects an image
  19. 38. the last name of the scientist who formed the quantitative law of refraction named after him
  20. 39. a frequency at which an elastic object naturally tends to vibrate
  21. 41. a disturbance that travels from one place to another transporting energy, but not necessarily matter, along with it
  22. 42. description of material that absorb light without reemission
  23. 44. the angle of reflection equals the angle of incidence
Down
  1. 1. the continuous range of electromagnetic waves that extends in frequency from radio waves to gamma waves
  2. 2. the last name of the scientist credited for observing that the universe is expanding
  3. 3. description of materials that allow light to pass through them in straight lines
  4. 4. the bending of waves due to a change in wave speed
  5. 6. electromagnetic radiation with frequency just higher than visible violet light
  6. 8. a wave in which the medium vibrates in a direction perpendicular (transverse) to the direction in which the wave travels
  7. 9. the subjective impression about the frequency of sound
  8. 10. the imaginary line perpendicular to the plane of a reflecting surface
  9. 12. the high point on a wave represented as a sine curve
  10. 15. the low point on a wave represented as a sine curve
  11. 17. the combined effect of two or more waves overlapping
  12. 18. any bending of light by means other than reflection and refraction
  13. 20. an energy-carrying wave produced by an oscillating electric charge
  14. 23. the distance from the top of one crest to the top of the next crest or, equivalently, the distance between successive identical parts of the wave
  15. 25. the change in frequency of a wave due to the motion of the source (or due to the motion of the receiver)
  16. 26. sound waves with frequencies lower than 20 Hz
  17. 28. the returning of wave to the medium from which it came when it hits a barrier
  18. 34. the reflection of sound
  19. 37. sound waves with frequencies higher than 20 kHz
  20. 40. a tiny packet of energy; one particle of light
  21. 43. the receptor in our eyes that perceives color