physics words

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Across
  1. 3. distance between identical points
  2. 6. the throwing back by a body or surface of light, heat, or sound without absorbing it
  3. 7. interference Constructive interference occurs when the maxima of two waves add together
  4. 10. speed the distance a wave travels in a given amount of time
  5. 11. (compressional) wave Longitudinal or compression waves are defined as waves where the particle motion
  6. 13. the fact or phenomenon of light, radio waves
  7. 14. Effect The Doppler effect or Doppler shift is the change in frequency of a wave in relation to an observer who is moving relative to the wave source
Down
  1. 1. radiation the flow of energy at the universal speed of light
  2. 2. frequency waves that pass a fixed point
  3. 4. Spectrum the entire distribution of electromagnetic radiation according to frequency or wavelength.
  4. 5. a substance or material that carries the wave.
  5. 8. Wave motion in which all points on a wave oscillate
  6. 9. interference occurs when the maxima of two waves are 180 degrees out of phase
  7. 12. 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