Wild Wave Crossword

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