Across
- 1. small pieces of rock, sand, and soil.
- 4. rocks made from high heat and pressure.
- 6. the dull or shiny appearance of a mineral.
- 7. a natural, nonliving solid made of crystals.
- 10. the fifth and last layer of soil.
- 11. the color when a mineral strikes a tile.
- 14. a mineral's resistance to being scratched.
- 16. rocks formed from cooling lava or magma.
Down
- 2. the second layer of soil.
- 3. material from dead animals and plants.
- 5. the fourth layer of soil.
- 8. the process of rocks changing from one type to another.
- 9. a rock made from layers of sediment.
- 12. the hardest mineral.
- 13. the third layer of soil.
- 15. made of small particles that cover the Earth's surface.