AFNR Lesson 4.2 Vocab Crossword

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Across
  1. 2. – The process of being supplied with air.
  2. 4. – The relative portions of sand, silt, and clay particles in a mass of soil.
  3. 7. – A substance in soil, such as organic matter, clay, carbonates, or phosphates, which resists changes of soil pH.
  4. 12. – The act or process of separating a solid from a liquid.
  5. 13. – The arrangement of primary soil particles into compound particles or aggregates separated from adjoining aggregates.
  6. 14. – The ability of a soil to resist a change in its hydrogen-ion concentration.
  7. 16. – The ability of soil to hold water in the root zone.
  8. 18. – A unit of soil structure, such as an aggregate, crumb, prism, block, or granule, formed by natural processes (in contrast with a clod, which is created artificially by compression of wet clay soil).
  9. 19. – The first change with depth in texture or structure in a soil profile.
Down
  1. 1. – A vertical section of soil. The section, or face of an exposure made by a cut, may exhibit a succession of separate layers with depth, although these may not be separated by sharp lines of demarcation.
  2. 3. – The capacity of soil or rock for transmitting a fluid. The degree of permeability depends upon the size and shape of the pores, the size and shape of their interconnections, and the extent of the latter.
  3. 5. – Able to burn or corrode organic tissue by chemical action,
  4. 6. – A soil separate in the mechanical analysis of soil.
  5. 8. – The relative degree of downward movement of water in soil; also called permeability.
  6. 9. – Refers to the extent of voids or openings in the soil that exist between soil particles and soil peds or clods. These pores hold water and air for absorption by plant roots. About half of soil volume, which is in a good physical condition for plant growth is pore space.
  7. 10. – A thin mixture of water and any fine insoluble materials such as clay.
  8. 11. – A layer of soil, approximately parallel to the surface, having distinct characteristics produced by soil-forming processes.
  9. 15. – Soil that consists of less than 52 percent sand, 28 to 50 percent silt, and 7 to 27 percent clay, resulting in a soil texture ideal for gardening.
  10. 17. – Surface or subsurface soils presumably are fertile soils, rich in organic matter r humus debris.