Word Work #5 Crossword

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Across
  1. 6. a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action
  2. 7. a wave vibrating in the direction of propagation
  3. 8. the lowest point of a wave
  4. 10. an elastic wave in the earth produced by an earthquake or other means
  5. 12. diminution in the density of something, especially air or a gas
Down
  1. 1. the maximum extent of a vibration or oscillation, measured from the position of equilibrium
  2. 2. the rate at which something occurs or is repeated over a particular period of time or in a given sample
  3. 3. a wave vibrating at right angles to the direction of its propagation
  4. 4. the highest point of a wave
  5. 5. a disturbance in a medium that carries energy without a net movement of particles
  6. 9. the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave
  7. 11. the reduction in volume (causing an increase in pressure)