Rocks and Minerals

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Across
  1. 2. The remains or traces of an ancient organism preserved in rock
  2. 5. The rigid outer part of Earth, made of the crust and upper mantle
  3. 7. The squeezing of sediment by the weight of overlying layers
  4. 10. The wearing away and removal of rock
  5. 13. Small rock fragments such as mud, sand or gravel
  6. 15. The movement of continents around the surface of Earth
  7. 16. A place where two tectonic plates move away from each other
  8. 17. The set of changes that turn one rock type into another
  9. 18. A place where two tectonic plates move towards each other
  10. 19. A border between two neighbouring tectonic plates
Down
  1. 1. Any rock formed by the cooling of magma or lava
  2. 3. The sinking of one tectonic plate beneath another
  3. 4. The gluing together of sediment by new mineral crystals
  4. 6. A place where two tectonic plates slide past each other
  5. 8. A section of the crust and upper mantle
  6. 9. Any rock that has been changed by intense heat and pressure
  7. 11. Any rock formed when sediment is compacted or cemented
  8. 12. The thickest layer of Earth, between the core and the crust
  9. 14. A natural substance usually found as crystals in rocks