Weathering, Erosion, and Depositions Crossword Puzzle

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Across
  1. 1. the most fully decomposed organic matter in the lowest section of the O horizon
  2. 8. a zone of leaching or eluviation found in some acidic soils under the O horizon or less often the A horizon
  3. 10. the underlying rock material from which the inorganic components of a soil are derived
  4. 11. another word for acid precipitation
  5. 14. high in sulfuric acid and nitric acid from reactions between water vapor and sulfur and nitrogens oxides in the atmosphere
  6. 17. the organic horizon at the surface of many soils, composed of organic detritus in various stages of decomposition
  7. 19. a concentrated accumulation of minerals rom which economically valuable materials can be extracted
  8. 20. the proportion of soil bases to soil acids expressed as a percentage
  9. 21. the physical removal or rock fragments from a landscape or ecosystem
  10. 22. the process of looking for minerals metals and precious stones in river sediments
  11. 23. the removal of strips of soil and rock to expose ore
  12. 24. the breakdown or rocks and minerals by chemical reactions, the dissolving of chemical elements from rocks, or both
  13. 25. the average concentration of an element in Earth's crust
Down
  1. 2. the loss of some or all of a soil's ability to support plant growth
  2. 3. a mining technique in which the entire top of a mountain is removed with explosives
  3. 4. in resource management the know quantity of a resource that can be economically recovered
  4. 5. unwanted waste material created during mining including mineral and other residues that are left behind after the metal or ore is removed
  5. 6. an element with properties that allow it to conduct electricity and heat energy
  6. 7. a horizontal layer in a soil defined by distinctive physical features such as texture and color
  7. 9. the mechanical breakdown of rocks and minerals
  8. 12. a soil horizon composed primarily of mineral material with very little organic matter
  9. 13. the ability of a particular soil to absorb and release cations
  10. 15. the least-weathered soil horizon which always occurs beneath the B horizon and is similar to the parent material
  11. 16. frequently the top layer of soil, a zone of organic material and minerals that have been mixed together (topsoil)
  12. 18. mining techniques used when the desired resource is more than 100 m below the surface of the Earth