Across
- 3. When chemicals change the minerals in a rock
- 5. Rock changed by heat and pressure
- 7. Living parts of an ecosystem
- 9. Rock formed when melted rock cools
- 10. How rocks change from one type to another
- 12. Why water molecules have slightly positive and negative ends
- 13. When rock and soil move downhill due to gravity
- 14. Rock made from layers of sediment
- 15. The original material that soil develops from
- 16. Rain made acidic by pollution
Down
- 1. When wind water or ice carries away rock and soil
- 2. The process of creating soil from broken down rock and organic matter
- 4. Breaking rock into smaller pieces without changing what it's made of
- 6. When seawater becomes more acidic from absorbing carbon dioxide
- 8. The shape and features of the land
- 11. When water freezes in cracks and breaks rock apart