Chapter 2

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Across
  1. 3. plowing fields with a slope to prevent soil loss
  2. 5. how we'll soil supports plant growth
  3. 6. the dead plants on the soils surface
  4. 7. a map that shows a type of area
  5. 10. rich soil that has equal parts of silt clay and sand
  6. 12. the grinding away of rock from other rocks
  7. 13. mass of roots grass and soil
  8. 14. the process when things move weathered rock and soil
  9. 16. a weather when rock is physically broken
  10. 20. tiny air spaces that water can seep through in material
  11. 22. a heavier contour line on a map
  12. 23. mixture of minerals that makes up the topmost layer of soil
  13. 24. a difference of something from one contour line to another
  14. 25. the way to prevent soil destruction
  15. 29. a chemical change that forms rust
Down
  1. 1. solid rock beneath the soil
  2. 2. the loss of soil in the Great Plains around the 1930's
  3. 3. process that breaks rocks through chemical change
  4. 4. things humans use in nature
  5. 8. organic material in soil
  6. 9. dead crops left in the ground to hold a place in the soil
  7. 11. weathered material where plants can grow
  8. 15. was operated in the past to change earths surface
  9. 17. a line that connects 2 separate points on a map
  10. 18. a process that breaks down rock
  11. 19. soil organisms that break down dead plants and animals
  12. 21. soil that is different through color and texture
  13. 26. process that splits up rock into small cracks
  14. 27. keeping a soils fertility by planting different crops each year
  15. 28. the layer beneath the top soil that has clay