Alex's Crossword

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Across
  1. 3. motion in which all points on a wave oscillate along paths at right angles to the direction of the wave's advance.
  2. 5. the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire.
  3. 7. occurs when the maxima of two waves are 180 degrees out of phase
  4. 11. the maximum extent of a vibration or oscillation, measured from the position of equilibrium.
  5. 12. occurs when the maxima of two waves add together (the two waves are in phase), so that the amplitude of the resulting wave is equal to the sum of the individual amplitudes.
  6. 14. the process by which a beam of light or other system of waves is spread out as a result of passing through a narrow aperture or across an edge, typically accompanied by interference between the wave forms produced.
Down
  1. 1. the throwing back by a body or surface of light, heat, or sound without absorbing it.
  2. 2. theflow of energy at the universal speed of light through free space or through a material medium
  3. 4. the distance a wave travels in a given amount of time,
  4. 5. the number of waves that pass a fixed point in a given amount of time.
  5. 6. a substance or material that carries the wave.
  6. 8. waves in which the vibration of the medium is parallel ("along") to the direction the wave travels and displacement of the medium is in the same (or opposite) direction of the wave propagation.
  7. 9. the change in frequency of a wave in relation to an observer who is moving relative to the wave source
  8. 10. the range of frequencies of electromagnetic radiation and their respective wavelengths and photon energies.
  9. 13. the change in direction of a wave passing from one medium to another caused by its change in speed.