Minerals and Igneous Rocks

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Across
  1. 5. Molten rock IN the Earth.
  2. 7. When a mineral breaks on a flat plane.
  3. 8. At room temperature, minerals are a ___.
  4. 9. Minerals don't always, but can grow ___.
  5. 14. Rock with large crystals mixed with fine ones.
  6. 16. When a mineral breaks with a bumpy irregular edge.
  7. 17. Rock with air bubbles in it.
  8. 18. Basalt is __ grained.
  9. 20. Extrusive rock made of fine grains found mostly in ocean crust.
  10. 21. Intrusive rock made mostly of quartz with coarse grains.
  11. 23. 3.5 is the approximate hardness of a __.
  12. 24. 2.5 is the approximate hardness of a __.
  13. 25. Minerals have a chemical __ that tells what they are made of.
Down
  1. 1. The core of Earth is hot from the initial formation and the presence of __ materials.
  2. 2. Minerals are made from chemicals that are ____.
  3. 3. Granite is __ grained.
  4. 4. Rocks formed from molten magma or lava cooling.
  5. 6. 5.5 is the approximate hardness of __.
  6. 10. On Earth, there is a __ __ that recycles the surface.
  7. 11. Molten rock OUT of the Earth.
  8. 12. Rubbing a mineral on ceramic can make a __ to help identify it.
  9. 13. Igneous rocks formed IN the Earth.
  10. 15. Igneous rocks formed OUT of the Earth.
  11. 19. Minerals form __ in other words, not man-made.
  12. 22. 6.5 is the approximate hardness of an iron __.