Vocabulary

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Across
  1. 3. contour line on topographic map labled to elevation
  2. 5. protection of soil against erosion
  3. 6. mechanical weathering where rock is broken by the expansion of water
  4. 8. plowing along contours of land
  5. 11. plowing parallel farmland
  6. 12. upper and putter most layer of earths crust
  7. 13. quality of being fertile
  8. 14. wear away or change in texture or appearence
  9. 15. or disitegration of rocks
  10. 18. surface of the ground
  11. 19. fungus or bacteria
  12. 20. upper layer of earths crust
  13. 21. map charicterized by large scale detail and relief
  14. 23. deposites of dead plant and animal matter
  15. 26. difference in elevation represented by each contour line on a map
  16. 27. process of scraping or wearing away
  17. 28. soil rock underplaying loose deposits such as soil
  18. 29. the process of being oxidized
Down
  1. 1. substances such as minerals forests water and fertile
  2. 2. eroded by wind wateror other natural agents
  3. 4. changing in earths crust
  4. 7. soil lying under neat surface soil
  5. 9. the breaking down of rocks soils and minerals
  6. 10. fertile soil of clay
  7. 16. organic component of soil
  8. 17. a layer in a soil profile
  9. 22. allowing liquids or gasses to pass through
  10. 24. area where vegetation has been lost
  11. 25. when crops loose seeds and regrow
  12. 26. line on map joining point of equal height above or below sea level