Rocks and Minerals

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Across
  1. 4. Hollow rock formations
  2. 6. Rock that forms from hot, molten rock
  3. 7. This is used to identify a few minerals
  4. 8. Type of rock formed from pre-existing rocks
  5. 10. When a mineral breaks easily along flat surfaces
  6. 11. The term for magma when it reaches Earth's surface
  7. 13. How atoms arrange themselves in a crystal structure
Down
  1. 1. Measured using the Mohs Hardness Scale
  2. 2. Molten rock found deep within Earth
  3. 3. How light is reflected from a mineral's surface
  4. 5. Type of rock that started out as another type of rock
  5. 7. A solid whose atoms are arranged in a pattern
  6. 8. The color of a mineral's powder
  7. 9. When a mineral breaks apart in an irregular way
  8. 12. Long and narrow mineral formations