Chapter 2

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Across
  1. 1. plowing on the curves to prevent soil loss
  2. 2. lines on a topographic map
  3. 3. thawing and freezing of water I between two rocks
  4. 4. change of set contour lines
  5. 6. tiny holes where water is able to seep through
  6. 9. the movement of weathered rock
  7. 10. process that breaks down rock
  8. 12. map that uses line to show elevations
  9. 15. how we'll soil supports growth
  10. 16. where crops are left to hold soil in place
  11. 18. when rock particles change the shape of a rock over time
  12. 19. the way earth has changed over time
  13. 21. the solid layer of rock under earths surface
  14. 22. fertile soil
  15. 23. mostly clay soil that is under the topsoil
  16. 24. the top layer of soil
  17. 26. the heavier contour lines
  18. 29. a change when substances rusts
Down
  1. 1. the process of rock removal with chemicals
  2. 5. Worms are a type of _____.
  3. 7. dark organic material in soil
  4. 8. layer of dead organic material
  5. 11. the layers of different soil
  6. 13. physical weathering
  7. 14. thick mass of roots and soil
  8. 17. anything in nature that humans use
  9. 20. preserving soil
  10. 25. planting different crops each year to increase fertility rate of the soil
  11. 27. In the Great Plains in 1930's the _______caused soil soil
  12. 28. I dug in the ____ to find worms.