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