Electromagnetic and Mechanical Waves

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Across
  1. 5. is the application of balanced inward forces to different points on a material or structure, that is, forces with no net sum or torque directed so as to reduce its size in one or more directions.
  2. 7. are waves in which the vibration of the medium is parallel to the direction the wave travels and displacement of the medium is in the same direction of the wave propagation.
  3. 8. is a wave that is an oscillation of matter, and therefore transfers energy through a medium.
  4. 10. Effect an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move toward (or away from) each other.
  5. 12. a disturbance that travels through a medium, transporting energy from one location to another location without transporting matter.
  6. 14. the bending of a ray when it passes at an angle from one medium into another in which its speed is different
  7. 16. is a perceptual property of sounds that allows their ordering on a frequency-related scale, or more commonly, pitch is the quality that makes it possible to judge sounds as "higher" and "lower" in the sense associated with musical melodies.
  8. 19. is the number of occurrences of a repeating event per unit of time.
  9. 20. occurs when the maxima of two waves add together, so that the amplitude of the resulting wave is equal to the sum of the individual amplitudes.
Down
  1. 1. occurs when waves come together so that they completely cancel each other out.
  2. 2. waves that are created as a result of vibrations between an electric field and a magnetic field.
  3. 3. is a measure of three-dimensional space. It is often quantified numerically using SI derived units or by various imperial or US customary units.
  4. 4. is the interference or bending of waves around the corners of an obstacle or through an aperture into the region of geometrical shadow of the obstacle/aperture.
  5. 6. is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated.
  6. 9. a point on a surface wave where the displacement of the medium is at a maximum.
  7. 11. is the reduction of an item's density, the opposite of compression.
  8. 13. is the opposite of a crest, so the minimum or lowest point in a cycle.
  9. 15. measure of its change in a single period
  10. 17. is a wave that oscillates perpendicularly to the direction of the wave's advance.
  11. 18. is the distance over which the wave's shape repeats.