Across
- 4. Breakdown of materials
- 7. Evidence of continental drift
- 10. Deepest part of Earth
- 11. Building block of minerals
- 13. Measurement of earthquakes
- 15. Seismic activity
- 16. Continental _________
- 17. Made of minerals
- 18. Rocks go through this to change
Down
- 1. Cools under the surface
- 2. Leaves behind erratics
- 3. Hardness scale
- 5. Point directly above the focus
- 6. slides on top the mantle
- 8. Rocks made from magma or lava
- 9. Super continent
- 10. The upper layer of the Earth
- 12. Cools on Earth's surface
- 14. How shiny or dull a rock is