Soils Classification Practice

25 Questions

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Classification Quizzes & Trivia

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Questions and Answers
  • 1. 
    Which surface horizon has a low base saturation (USDA)?
    • A. 

      Mollic

    • B. 

      Umbric

    • C. 

      Ochric

    • D. 

      Histic

  • 2. 
    List in order the hierarchial classifications for USDA[Blank]​[Blank]​[Blank]​[Blank]​[Blank]​[Blank] 
  • 3. 
    Which soil order (USDA) has 30% or more clay to a depth of 50 cm and shrinking/swelling properties?
    • A. 

      Histosols

    • B. 

      Andisols

    • C. 

      Vertisols

    • D. 

      Utisols

    • E. 

      Gelisols

  • 4. 
    Soils with organic soil materials extending down to a impermeable layer or with an organic layer that is more than 40 cm thick and without andic properties 
    • A. 

      Histosols

    • B. 

      Spodosols

    • C. 

      Oxisols

    • D. 

      Vertisols

    • E. 

      Alfisols

  • 5. 
    Which USDA soil order has the highest degree of weathering and soil development?
    • A. 

      Entisols

    • B. 

      Vertisols

    • C. 

      Utisols

    • D. 

      Aridsols

    • E. 

      Option is not listed

  • 6. 
    For USDA nomenclature names grow to the right
    • A. 

      True

    • B. 

      False

  • 7. 
    Name the USDA sub-order [Blank] and order [Blank] of Haplorthod 
  • 8. 
    Oxisols and Ultisols are the only USDA orders that do not have CSSC (Canadian) equivalents 
    • A. 

      True

    • B. 

      False

  • 9. 
    Write text here
  • 10. 
    Little development because of temperature, Frost churning is typical
    • A. 

      Histosols

    • B. 

      Gelisols

    • C. 

      Aridisols

    • D. 

      Inceptisol

  • 11. 
    Intensive acid leaching, with podzolic B (o.m. & Al (+Fe) accumulation; Acid vegt: forest (particularly conifer) or heath 
    • A. 

      Spodosols

    • B. 

      Histosols

    • C. 

      Mollisols

    • D. 

      Vertisols

  • 12. 
    New soils; little or no horizon development; varied locations – youth, erosion, aridity
    • A. 

      Inceptisols

    • B. 

      Aridisols

    • C. 

      Entisols

    • D. 

      Alfisols

  • 13. 
    Young soils; some diagnostic features, but no “mature” horizons; weakly developed A (usually ochric)
    • A. 

      Ultisols

    • B. 

      Histosols

    • C. 

      Mollisols

    • D. 

      Inceptisols

  • 14. 
    Organic soils without permafrost; wetland soils; little profile development because of anaerobic conditions; accumulation of organic matter (thick layers); 
    • A. 

      Spodosols

    • B. 

      Histosols

    • C. 

      Mollisols

    • D. 

      Oxisols

  • 15. 
    Accumulation of calcium-rich o.m. to form thick (>10 cm), dark, mollic / chernozemic A-horizon, with high base exchange capacity; Cool, sub-arid to sub-humid plains of prairies
    • A. 

      Spodosols

    • B. 

      Histosols

    • C. 

      Mollisols

    • D. 

      Vertisols

  • 16. 
    Largest global order; Light coloured (ochric) A horizons
    • A. 

      Aridisols

    • B. 

      Andisols

    • C. 

      Alfisols

    • D. 

      Vertisols

  • 17. 
    More weathered than mollisols, less so than spodosols (podzols); Typically soils of deciduous forest or savanna
    • A. 

      Aridisols

    • B. 

      Andisols

    • C. 

      Alfisols

    • D. 

      Vertisols

  • 18. 
    Gleysolic Order is only recognized in Canada 
    • A. 

      True

    • B. 

      False

  • 19. 
    Gley is a group of colors that are rich dark brown-black color 
    • A. 

      True

    • B. 

      False

  • 20. 
    Oxisols are relevant in Canada 
    • A. 

      True

    • B. 

      False

  • 21. 
    Ultisols are [Blank] weathered and acidic than Alfisols, but [Blank] so than Spodosols
  • 22. 
    Was this helpful in testing your knowledge?
    • A. 

      Yes

    • B. 

      Yes

    • C. 

      Yes

    • D. 

      Yes

  • 23. 
    Soil Classification is fucking brutal and almost pointless to learn
    • A. 

      True

    • B. 

      False