Igneous Rocks

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Across
  1. 2. One of the three minerals that makes up Granite
  2. 6. one of the products from a volcano
  3. 7. Rocks formed from cooling magma
  4. 9. Rocks formed from magma cooling underground
  5. 10. Crystals formed slowly are usually......
  6. 12. The thickest earth layer
  7. 15. Rocks formed by magma reaching the surface
  8. 16. Crystals bformed very quickly are .....
  9. 17. The study of rocks
  10. 18. The outer core of the earth is thisw
Down
  1. 1. A Light coloured igneous rock with large crystals
  2. 3. A volcanic glass
  3. 4. Chemical substances that rocks are made from
  4. 5. A dark igneous rock with very small crystals
  5. 8. The outer layer of the earth
  6. 9. Crystals that have grown into one another
  7. 11. One of ther minerals that makes up Granite
  8. 12. Hot molten rock
  9. 13. A light grey igneous rock with trapped gas bubbles
  10. 14. The inner core of the earth is this.
  11. 16. A dark volcanic rock with many holes, denser than pumice
  12. 18. Magma that has reached the surface