Rock On

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Across
  1. 1. Small bits of rock that can be compressed to form sedimentary rocks.
  2. 3. A mineral classification property involving how well light travels through it.
  3. 4. A sedimentary rock made of compressed sand.
  4. 6. A metamorphic rock that's parent rock is limestone.
  5. 7. These are a kind of igneous rock formed by magma.
  6. 9. Layers or bands shown in sedimentary rocks.
  7. 10. This is a kind of molten rock that cools slowly under the earth's surface.
  8. 11. A mineral classification test involving whether a mineral is dull or glassy.
  9. 12. The most common type of igneous rock.
  10. 15. A mineral classification property that involves rubbing rocks together to see which one can scratch the other.
  11. 16. - A mineral classification test involving which lines along a mineral it may split.
  12. 17. This is a kind of molten rock that reaches the earth's surface during a volcanic eruption.
  13. 18. Natural substances that are the building-blocks of rocks.
Down
  1. 2. This type of rock is formed by the cooling and solidification of molten rocks.
  2. 5. This is a kind of igneous rock formed by lava.
  3. 6. This type of rock is formed by high pressure and extreme heat acting upon igneous and sedimentary rocks.
  4. 8. Minerals that are prized for their beauty e.g. Diamonds.
  5. 13. A mineral classification property that involves seeing what colour trail a mineral leaves behind.
  6. 14. This type of rock is formed by the pressing together and compaction of sediments under intense pressure.