Soil Activities

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Across
  1. 2. Measure of how easily water and air move through soil.
  2. 5. leaves cover the soil surface.
  3. 6. Layer of weathered parent rock beneath the subsoil.
  4. 8. Mixture of small rock fragments that improve drainage.
  5. 12. Smallest soil particle that feels sticky when wet.
  6. 13. Organisms that break down dead plants and animals.
  7. 15. Medium-sized soil particle, smaller than sand but larger than clay.
  8. 17. Subsoil layer with minerals leached from above.
  9. 18. Dark, rich organic matter formed from decayed plants and animals.
  10. 20. Matter that comes from living things.
  11. 21. Substance added to soil to provide nutrients for crops.
  12. 22. Top layer of soil where most roots and nutrients are found.horizonUppermost soil layer made mostly of organic matter.
  13. 23. feels gritty.
Down
  1. 1. Uppermost soil layer made mostly of organic matter.
  2. 2. A distinct layer in a soil profile.
  3. 3. Ideal soil mixture of sand, silt, and clay.
  4. 4. Natural process that creates soil from rock and organic matter.
  5. 7. Spaces between soil particles that hold air and water.
  6. 9. Original rock from which soil develops.
  7. 10. Process by which water removes minerals and nutrients from the soil.
  8. 11. Turns rocks into smaller pieces over time.
  9. 14. Shape or features of the land surface.
  10. 16. Loose material carried away by wind or water.
  11. 19. Substances needed by plants to grow.