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