Across
- 4. Isolated hill w/steep sides
- 10. Natural feaature of Earth's surface
- 13. Preserve existing conditions
- 14. Two plates slide sideways past each other
- 15. Home
- 17. Low area of land between hills or mountains
- 18. Two plates moving toward each other
- 19. Causing great & irreparable harm or damage
- 20. Formed under Earth's surface
Down
- 1. Two plates moving away from each other
- 2. Help build up the Earth
- 3. Rigid outer part of the Earth = crust & upper mantle
- 5. Depression or dip in Earth's surface
- 6. Large elevation = large steep hill
- 7. Area of flat land w/ few trees
- 8. Slab solid rock
- 9. Deep gorge
- 11. Large-scale processes affecting the structure of the Earth's crust
- 12. Raised area of land
- 16. Something that marks a border