Rocks and Minerals

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Across
  1. 2. Rocks that contain a metal or other useful minerals
  2. 6. Rounded, hollow rock that is often lined with mineral crystals
  3. 9. Dissolved minerlas crystallize and glue particles of sediment together
  4. 12. Hard, colorful, minerals that have a brilliant or glassy luster.
  5. 13. Atoms are arranged to form a material with a crystal structure.
  6. 15. Minerals break in an irregular way.
  7. 16. Aluminum, iron, copper, and sliver are all forms of _____.
  8. 18. Grains that are arranged in parallel layers or bands
  9. 20. Forms sediment by particles getting carried away from their source by wind and water
Down
  1. 1. Sediment settles out of the water or wind carrying it
  2. 3. Light colored rock that has a high silica content
  3. 4. Rocks usually ____ either beneath the surface or above it
  4. 5. People who classify rocks.
  5. 7. Grains that are arranged randomly
  6. 8. Rocks are broken down into smaller pieces or dissolved in water.
  7. 10. Presses sediment together growing thick layers
  8. 11. Existing rocks are changed by heat, pressure, or chemical reactions
  9. 14. Dark colored rock that has a low silica content
  10. 17. cycle: A process that changes one rock into another type of rock
  11. 19. Magma that cools and crystallizes