Rock, Soil and Rock cycle

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Across
  1. 5. Rocks changed by heat and pressure
  2. 6. A natural fertiliser made of broken down organic matte
  3. 8. A soil with a balance of sand, clay and organic matter
  4. 10. The process where liquid magma or lava cools down and becomes solid rock.
  5. 14. This metamorphic rock is formed when granite is heated
  6. 15. Small pieces of rocks
  7. 17. A mixture of broken up rocks, organic matter, water
  8. 18. Rocks made from sediments
  9. 19. Process of breaking up rocks
Down
  1. 1. Igneous rocks formed outside the the Earth's crust
  2. 2. Burying of sediments with many layers of sediments above
  3. 3. A substance used for killing insects or other organisms that harm crops plants or animals
  4. 4. A scientist who studies rocks
  5. 7. A fossil where the bones of the whole animal are preserved in minerals
  6. 9. A kind of fossil that is made of imprints of animals left in the sediments
  7. 11. Preserved remains of plants and animals
  8. 12. An igneous rock with larger crystals
  9. 13. To put down sediments into rivers and lakes
  10. 16. A sedimentary rock made from shells
  11. 20. Word that means fire