Waves activity 1

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Across
  1. 4. Particle motion is perpendicular to the direction of wave travel.
  2. 5. Distance sound travels per unit time (m/s); depends on the medium, not frequency.
  3. 6. A cyclical transfer of energy that propagates through a medium.
  4. 9. Time it takes for one full cycle of compression and rarefaction; reciprocal of frequency.
  5. 13. Two waves not fully in phase or out of phase combine into an intermediate wave.
  6. 14. Force per area; increases during compression, decreases during rarefaction.
  7. 15. Particle motion is parallel (along) to the direction of wave travel.
  8. 16. Mass per volume; particle density increases in compression, decreases in rarefaction.
Down
  1. 1. Two waves out of phase cancel each other out.
  2. 2. Number of cycles per second (Hz); determined by the sound source.
  3. 3. Back-and-forth displacement of particles around their original position.
  4. 4. Heat generated as the wave loses energy to the medium
  5. 7. Requires a medium (like air, water, or tissue) to travel.
  6. 8. A longitudinal, mechanical wave that travels through compressions and rarefactions.
  7. 10. Maximum variation of a variable from its mean value (strength of the wave).
  8. 11. Two waves in phase combine to make a larger wave.
  9. 12. Physical distance from one compression to the next; depends on both frequency and propagation speed.