Soil Science Crossword

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Across
  1. 4. ____ (color) surface soil layers indicate the presence of organic matter.
  2. 5. Grassland soils
  3. 9. ____ matter consists of plant and animal residues in various stages of decay.
  4. 11. ___ (color) soil is often wet during the warm part of the year and poorly drained.
  5. 12. One of our most important natural resources
  6. 15. Adding this to soil makes the pH more alkaline
  7. 17. Soil pH of 7.0
  8. 19. Adding this to soil makes the pH more acidic
  9. 21. Largest particle in soil
  10. 22. Soils with weakly developed subsurface horizons
  11. 24. Soils with permafrost within 6 feet of the surface
Down
  1. 1. Soil ____;the arrangement and properties of the various soil layers
  2. 2. Soil pH of less than 7.0
  3. 3. Clayey soils
  4. 6. Organic soils
  5. 7. Intensely weathered soils of tropical and subtropical environments
  6. 8. ______ material; The lower soil level from which the topsoil and subsoil have developed; C horizon
  7. 10. Soil pH of more than 7.0
  8. 13. The surface or very top layer of soil; A horizon
  9. 14. Soils formed in volcanic ash
  10. 16. The layer underneath the topsoil; B horizon
  11. 18. Soils with a subsurface zone of silicate clay accumulation
  12. 20. Soils with little or no morphological development
  13. 23. Smallest particle in soil