Waves Vocabulary

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Across
  1. 2. the pitch of a sound is essentially a description of the frequency of the sound. It is also known as the sensation of a frequency. A high pitch sound corresponds to a high frequency sound wave and a low pitch sound corresponds to a low frequency sound wave.
  2. 3. describes light that has the same wavelength so it is one color.
  3. 4. a mechanical wave is a wave that is an oscillation of matter, and therefore transfers energy through a medium. While waves can move over long distances, the movement of the medium of transmission—the material—is limited.
  4. 7. a wave vibrating at right angles to the direction of its propagation.
  5. 8. a substance or material that carries the wave.
  6. 11. the change in direction of a wave passing from one medium to another caused by its change in speed. For example, waves travel faster in deep water than in shallow water.
  7. 14. a decrease in the density of something.
  8. 15. a wave in which the particles of the medium move progressively in the direction of the wave propagation with such a gradation of speeds that the faster overtake the slower and are themselves in turn overtaken
  9. 18. is the reflection of light or other waves or particles from a surface such that a ray incident on the surface is scattered at many angles rather than at just one angle as in the case of specular reflection.
  10. 20. is the mirror-like reflection of waves, such as light, from a surface.
Down
  1. 1. a standing wave, also known as a stationary wave, is a wave that oscillates in time but whose peak amplitude profile does not move in space.
  2. 2. is a property applying to transverse waves that specifies the geometrical orientation of the oscillations. In a transverse wave, the direction of the oscillation is perpendicular to the direction of motion of the wave.
  3. 5. a wave vibrating in the direction of propagation.
  4. 6. is the change in frequency of a sound wave in relation to an observer who is moving relative to the wave source.
  5. 9. the spreading of waves around obstacles.
  6. 10. 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.
  7. 12. is an interference pattern between two sounds of slightly different frequencies, perceived as a periodic variation in volume whose rate is the difference of the two frequencies.
  8. 13. is the change in frequency of a light wave in relation to an observer who is moving relative to the wave source.
  9. 16. 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. Common examples include the reflection of light, sound and water waves.
  10. 17. describes the phenomenon of increased amplitude that occurs when the frequency of an applied periodic force is equal or close to a natural frequency of the system on which it acts.
  11. 19. A ray of light or other form of radiant energy which is thrown back from a nonpermeable or nonabsorbing surface