APES Vocabulary Crossword

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Across
  1. 3. A concentrated accumulation of minerals from which they can be extracted
  2. 5. The physical removal of rock fragments from a landscape
  3. 8. The average concentration of an element in Earth's Crust
  4. 9. The underlying of rock material from which the inorganic components of a soil are derived
  5. 13. The breakdown of rocks and minerals by chemical reactions
  6. 15. The proportion of soil bases to soil acids, expressed as a percentage
  7. 17. The loss of some/all of a soil's ability to support plant growth
  8. 18. Mining techniques used when the desired resource is more than 328 feet below the surface
Down
  1. 1. A horizontal layer in a soil defined by features such as texture/color
  2. 2. The mechanical breakdown of rocks and minerals
  3. 4. Precipitation high in sulfuric acid and nitric acid
  4. 6. The ability of a particular soil to adsorb and release cations
  5. 7. The removal of strips of soil and rock to expose ore
  6. 10. Unwanted waste material creating during mining including mineral and other residues
  7. 11. The process of looking for minerals and metals in river sediments
  8. 12. An element with properties that allow it to conduct electricity and heat energy
  9. 14. The known quantity of a resource that can be economically recovered
  10. 16. The most fully decomposed organic matter in the lowest section of the O horizon