Across
- 4. the time earth was being composed
- 6. a sticky substance between a solid and a liquid
- 7. top of the earth
- 9. when one plate moves under another
- 11. an area where there are a lot of mountains and volcanoes
- 12. what made the plates move
- 13. third layer of the earth
- 14. layer above outer core
- 15. what thingsare made of
- 17. where plates seperate
- 20. made of metal
- 21. middle of the earth
- 22. layer above asthenosphee
- 23. the compactness of an object
Down
- 1. ball in the middle of the earth
- 2. cooled lava
- 3. wave that travels through solids only
- 5. wave that can travel through solids or liquids
- 8. natural disaster
- 10. hole below sea level
- 15. chunks of the earth
- 16. silvery white metal
- 18. person who studies earthquakes
- 19. layer above inner core