Waves I: Features of waves, Reflection and Refraction

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Across
  1. 4. Unit of wavelength.
  2. 9. This is a common example of a longitudinal wave. All humans except deaf people can notice this.
  3. 11. A vacuum and this material both have a refractive index of 1.
  4. 12. The time taken for a wave to complete one full vibration.
  5. 13. When a wave changes direction when entering a different medium due to a change in speed.
  6. 16. The angle of incidence which causes the angle of refraction to be 90 degrees. Can only happen when going from a higher to lower refractive index.
  7. 18. When the angle of incidence is larger than the critical angle when a wave travels from a more dense to less dense material you get ______ _______ reflection.
  8. 19. Imaginary line at right angles to the surface of a material. Used to measure angles.
  9. 20. The maximum displacement from the equilibrium position of a wave.
  10. 21. unit of frequency.
  11. 22. Angle at which the ray of light approaches a material. Angle of ________.
  12. 23. Prefix that is equivalent to 10^-9 of something.
  13. 24. Prefix that is equivalent to 10^6 of something.
Down
  1. 1. Vibrations are perpendicular to the direction of travel of the wave.
  2. 2. When a wave bounces off a surface.
  3. 3. The amount of vibrations per second.
  4. 5. Piece of equipment you should all have to measure angles!
  5. 6. The distance covered by a wave after one full oscillation OR the distance between two similar points on a wave.
  6. 7. All waves do this. Synonym for vibrate.
  7. 8. Prefix that is equivalent to 1000 of something.
  8. 10. Frequency x Wavelength = ________
  9. 14. sin(angle of incidence) / sin(angle of refraction) = _______
  10. 15. A common example of a transverse wave. Is an electromagnetic wave.
  11. 17. Vibrations are parallel to the direction of travel of the wave.