Science Vocabulary Unit 6 Part 1

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Across
  1. 3. How much of the nutrients plants need is in the soil.
  2. 5. The top layer of soil where most plant roots grow.
  3. 8. The best mix of sand, silt, clay, and humus.
  4. 9. The outer layer of the Earth that includes rocks and soil.
  5. 10. Large soil particles that feel gritty.
  6. 13. How good the soil is at helping plants grow.
  7. 14. How soil feels based on the size of its particles.
Down
  1. 1. The process of breaking down dead plants and animals into nutrients.
  2. 2. The layer under topsoil that has fewer nutrients.
  3. 4. Very tiny particles that feel sticky.
  4. 6. Things in the soil that were alive, like dead leaves or roots.
  5. 7. Parts of soil that were never alive.
  6. 11. Medium-sized particles that feel soft, like flour.
  7. 12. Dark, rich part of soil made from decomposed plants and animals.