Waves

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Across
  1. 2. is the SI unit for frequency
  2. 3. is the human perception of the frequency of sound
  3. 6. the number of wavelengths that pass by a point each second
  4. 7. 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. 8. the units used to measure intensity of sound waves
  6. 11. wave- a mechanical wave that causes particles in matter to move back and forth along the direction the wave travels
  7. 12. repeated echoes
  8. 13. is the places where the coils are squeezed together
  9. 15. the distance from one wave of energy to another as it is traveling from one point to another point
  10. 17. an object that the wave travels through( solids, liquids, gas)
  11. 18. is the places where the coils are spread apart
  12. 20. is the lowest point in the wave
Down
  1. 1. wave- a mechanical wave that causes particles matter to move at right angles to the direction the wave travels
  2. 4. is the highest point in the wave
  3. 5. is the change in direction of a wave
  4. 9. is the bending of waves around an object
  5. 10. wave- waves that can travel through matter and empty space, includes radio waves, infrared waves, visible light waves, ultraviolet, x-rays, gamma rays
  6. 14. is half the distance between a crest and trough
  7. 16. the amount of energy that a wave carries past a certain area each second
  8. 19. disturbance that moves through matter or space