Unit 8 Vocab

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Across
  1. 2. a water-bearing rock formation
  2. 4. a material that reduces the acid content of soil
  3. 8. large land area in which water from rain or melting snow is absorbed and from which water drains as it emerges from springs and moves into streams, rivers, ponds, and lakes
  4. 12. a material placed on the soil surface to break the fall of raindrops, prevent weeds from growing, and/or improve the appearance of the area
  5. 15. water that drains out of soil after it has been wetted
  6. 18. using techniques of soil preparation, planting, and cultivation that disturb the soil the least
  7. 19. water that flows from the land to oceans and contains little to no salt
  8. 21. alternating strips of row crops with strips of close-growing crops
  9. 23. planting of different crops in a given field every year or every several years
  10. 25. the addition of water to the land to supplement the water provided for crop production by rain or snow
  11. 26. water that drains out of soil after it has been wetted
Down
  1. 1. moisture remaining after gravitational water leaves the soil
  2. 3. conducting all operations, such as plowing, disking, planting, cultivating, and harvesting, acroos the slope and on the slope or hill
  3. 5. the process of wearing away of soil
  4. 6. following the level of the land around a hill
  5. 7. the cycling of water among the water sources, atmosphere, and surface areas
  6. 9. water that flows up the mouth of a river with rising or in-flowing ocean tides
  7. 10. made up of a sequence of living organisms that eat and are eaten by other organisms living in the community
  8. 11. material that supplies nutrients for plants
  9. 13. water that is held too tightly for plant roots to absorb
  10. 14. soil or wall structure built across a slope to capture water and move it safely to areas where it is not likely to cause erosion
  11. 16. where water soaks down into the soil
  12. 17. planting crops without plowing or disking the soil
  13. 20. occurs as layers of soil, nutrients, and chemicals into streams
  14. 22. a strip of grass growing in an area of a field where flowing water tends to erode the soil surface
  15. 24. drinkable and free from harmful microorganisms or chemicals