Rocks & Minerals - Grade V

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Across
  1. 1. Fossil fuel that forms when dead plant matter is converted into peat
  2. 3. Taj Mahal is made of this rock
  3. 4. Igneous rock that floats on water
  4. 8. solid material whose constituents are arranged in a highly ordered microscopic structure
  5. 9. Hot liquid rock that lies below earth's surface
  6. 10. Scientists who study rocks
Down
  1. 1. One form of lime stone
  2. 2. Inexhaustible source of energy
  3. 5. Made of sand stone
  4. 6. Most valuable gem stone
  5. 7. Used to carve Mount Rushmore
  6. 11. Blackboards are made from this