Waves

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Across
  1. 2. Totally empty space (no medium). Sound cannot travel through this
  2. 6. When once wave, their amplitudes combine and make a new wave
  3. 7. When waves spread out to fill the space through which they are moving
  4. 8. When a wave changes direction because it goes into a new medium
  5. 9. The distance between two similar parts of a wave
  6. 10. The lowest point of a transverse wave
  7. 11. The parts of a longitudinal wave that are closest together
  8. 13. A transverse wave of pure energy that can go through both a medium and empty space (vacuum). Light is this kind of wave
  9. 15. A type of wave where the medium moves perpendicular (vertical) to the direction the energy is moving
  10. 16. A disturbance that transfers energy from place to place
  11. 17. The parts of a longitudinal wave that are spread apart
  12. 18. The highest point on a transverse wave
  13. 20. A disturbance in matter that carries energy from one place to another
Down
  1. 1. The maximum distance from the rest position that the medium moves in a wave
  2. 3. A type of wave where the medium moves parallel (horizontal) to the direction the energy is moving. Sound is this type of wave
  3. 4. How many waves are created every second. Measured in Hertz (Hz)
  4. 5. When two waves of the same amplitude and frequency add to make a even bigger wave
  5. 12. The specific direction that a transverse wave is vibrating
  6. 14. A repeated back and forth or up and down motion that gives energy to a wave
  7. 19. The Material a mechanical wave moves through