Earth science

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Across
  1. 2. sideways and downward movement of the edge of a plate of the earth's crust
  2. 5. accumulation of decomposed and disintegrated plant remains
  3. 6. mass of a unit volume of a material substance
  4. 10. testable statement between two or more variables
  5. 13. perennial accumulation of crystalline ice
  6. 15. solidified from lava or magma
  7. 18. a joint that divides the rock into two or more pieces
  8. 19. any characteristics that can take on different values
  9. 20. molten rock that breaks through the Earth's surface
  10. 21. brings together intellectually diverse researchers
  11. 26. forms when magma is trapped
  12. 27. hot fluid within the earth's crust
  13. 28. icicle-shaped formation that hangs from the ceiling of a cav
  14. 29. minerals to split along crystallographic planes
Down
  1. 1. a way for heat to move
  2. 3. laying down of sediment carried by wind, flowing water, the sea or ice
  3. 4. the resistance of a material to localised plastic deformation
  4. 7. earthen materials are worn away and transported by natural forces
  5. 8. landscape where the dissolving of the bedrock has created sinkholes
  6. 9. formed on the floor of a cave by the drip of calcareous water
  7. 11. color of a mineral after it has been ground into a powder
  8. 12. an element that remains unchanged
  9. 14. rocks consisting of thin layers that can be separated
  10. 16. process of mineral assemblage and texture variation
  11. 17. science that deals with the earth's physical structure and substance
  12. 22. formed from pre-existing rocks
  13. 23. natural opening in the earth
  14. 24. rocks are composed of broken pieces of older rocks
  15. 25. appearance of a mineral surface in terms of its light-reflective qualities