SOIL EVIDENCE

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Across
  1. 2. / Makes up 25% of soil
  2. 6. / The pH number for the strongest base
  3. 7. / The measure of how acidic or basic a solution is
  4. 8. / The pH number for a neutral solution
  5. 9. / particles that form into pillars or columns
  6. 13. / the pH number for the strongest acid
  7. 15. / depends on the amount of air, water, organic matter, and elements
  8. 18. / Determined by the arrangement of small to large soil particles
  9. 19. / Leaf litter, topmost layer of soil
  10. 20. / Makes up 5% of soil, dead stuff
  11. 22. / Subsoil, 3rd layer.
  12. 24. / Particles do not stick together at all
  13. 26. / Top layer of the Earth's crust, where plants grow
  14. 27. / Bedrock, bottom layer.
  15. 29. / Particles form thin sheets
Down
  1. 1. / Particles that group together in small round grains
  2. 3. / Scale used to determine soil color
  3. 4. / Largest particles of soil
  4. 5. / What we used to measure pH
  5. 10. / Soil conditions that affect plant growth the most
  6. 11. / Makes up 25% of soil
  7. 12. / Layers formed by soil
  8. 14. / Tool used to determine soil texture
  9. 16. / Studies soils and rocks
  10. 17. / Topsoil layer, 2nd layer.
  11. 21. / Each soil has it's own -- properties, which can be traced
  12. 22. / Particles stick together in block shapes
  13. 23. / Smallest particles of soil
  14. 25. / Makes up 45% of soil
  15. 28. / Medium sized particles of soil