Wild Wave Crossword

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Across
  1. 5. Broken remains left behind after a disaster
  2. 9. The boundary between coast and land
  3. 11. A pile of scattered waste
  4. 14. Saving people from danger
  5. 15. A violent shaking in the ground
  6. 19. An artificial object that orbits the Earth
  7. 20. Someone who lives through a dangerous event
Down
  1. 1. Overcoming a challenge that was really difficult
  2. 2. A back and forth movement of an object
  3. 3. A harbor wave
  4. 4. A piece of material used to protect an injury
  5. 6. Very, very scared
  6. 7. An aircraft that has blades instead of wings
  7. 8. A wildcat with a bobbed tail
  8. 10. A hole in ground, caused by the ground dissolving
  9. 12. A small earthquake that comes after the big one
  10. 13. A vehicle that travels on water, but is smaller than a ship
  11. 16. A system that uses radio waves to check speed of objects
  12. 17. A location and navigation system
  13. 18. Something that transfers energy from one place to another