Waves crosswords

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Across
  1. 2. The highest point of a wave.
  2. 4. Some waves travel at the speed of_____.
  3. 7. Waves that can cook food and travel through the ionosphere
  4. 9. The second wave that appears on a seismograph.
  5. 10. light and sound____.
  6. 11. Distance between the resting position and the maximum displacement of the wave.
  7. 12. The first wave that appears on a seismograph.
Down
  1. 1. The name of the range of radiation.
  2. 3. Is the medium where waves travel.
  3. 5. The lowest point of a wave
  4. 6. A wave that needs to travel through a medium.
  5. 8. A ___ wave can break glass.