Waves!

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Across
  1. 3. A repeating disturbance that transfers energy through matter or space
  2. 5. high points on a transverse wave
  3. 8. A vibration that spreads as an acoustic wave through a medium
  4. 11. the most dense region of a longitudinal wave
  5. 13. Particles in the medium move along the same direction (parallel) to the direction the wave is travelling
  6. 14. The number of wavelengths that pass a fixed point each second
Down
  1. 1. The less dense region of a longitudinal wave
  2. 2. low points on a transverse wave
  3. 4. space in which there is no matter
  4. 6. Waves of energy that travels through Earth's layers
  5. 7. Measure of the size of a disturbance from a wave
  6. 9. Particles in the medium move at right angles (perpendicular) to the direction the wave is travelling
  7. 10. The disturbance on the surface of the water
  8. 12. The amount of time it takes one wavelength to pass a point