Rocks and Minerals

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Across
  1. 1. A hollow rock with crystal formations inside.
  2. 3. The way a mineral reflects light (e.g., metallic, glassy).
  3. 5. Mass per unit volume of a mineral.
  4. 6. A naturally occurring, inorganic solid with a crystal structure.
  5. 10. Rock changed by heat and pressure.
  6. 13. Rock formed from cooled magma or lava.
  7. 14. A mineral that reacts with acid and has perfect cleavage.
  8. 18. The breakdown of rocks into smaller pieces.
  9. 19. A measure of how resistant a mineral is to scratching.
  10. 22. The tendency of a mineral to break along smooth surfaces.
  11. 24. The color of a mineral’s powder when scratched on a streak plate.
  12. 25. The process where dissolved minerals bind sediments together.
  13. 26. The process of rocks being worn down by wind, water, or ice.
  14. 29. A metamorphic rock formed from shale.
Down
  1. 2. A rock containing valuable minerals.
  2. 4. Rock formed from compacted sediments.
  3. 7. Molten rock beneath the Earth's surface.
  4. 8. The process of sediments being pressed together.
  5. 9. Scale A scale that ranks minerals by hardness from 1 to 10.
  6. 11. Preserved remains or traces of ancient life.
  7. 12. The way a mineral breaks unevenly.
  8. 13. Igneous rock formed inside the Earth (e.g., granite).
  9. 15. Molten rock that has erupted onto the surface.
  10. 16. A solid where atoms are arranged in a repeating pattern.
  11. 17. Layering in metamorphic rocks.
  12. 20. Cycle The process of rock formation and transformation.
  13. 21. A common silicate mineral with a glassy luster.
  14. 23. Igneous rock formed from lava on the surface (e.g., basalt).
  15. 27. A fine-grained, dark igneous rock.
  16. 28. A coarse-grained igneous rock.