Light waves

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Across
  1. 4. a material in which a wave travels through
  2. 5. A disturbance that transfers energy from one place to another without transferring matter.
  3. 7. makes the particles in a medium more parallel to the direction that the wave travels
  4. 10. The amount of sound energy that passes through a square meter of space in one second
  5. 11. a wave that can travel through empty space and through matter
  6. 13. a wave in which the disturbance is perpendicular to the direction the wave travels
Down
  1. 1. A wave that can travel only through matter
  2. 2. Longitudinal waves that can only travel through matter
  3. 3. the regions of a longitudinal wave where the particles are farthest apart
  4. 6. A rapid, back and forth motion that can occur in solids, liquids, and gases
  5. 8. the regions of a longitudinal wave where the particles in the middle are closer together
  6. 9. the lowest points on a transverse wave
  7. 12. the highest points on a transverse wave