6S Chapter 4 Vocabulary

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Across
  1. 2. The type of weathering in which rock is physically broken into smaller pieces
  2. 4. A measure of how well soil supports plant growth
  3. 8. Rock that makes up Earth’s crust: also the solid layer beneath the soil
  4. 11. Dark-colored organic material in soil
  5. 13. An organism that gets energy by breaking down biotic wastes and dead organisms, and returns raw materials to the soil and water
  6. 14. The management of soil to limit its destruction
Down
  1. 1. The layer of soil below topsoil that has less plant and animal matter than topsoil and contains mostly clay and other minerals
  2. 3. Anything naturally occurring in the environment that humans use
  3. 5. A layer of soil that differs in color and texture from the layers below it
  4. 6. The process by which water, ice, wind, or gravity moves weathered particles of rock or soil
  5. 7. The chemical and physical processes that break down rock and other substances
  6. 9. Type of weathering that breaks down rock through chemical changes
  7. 10. The crumbly, topmost layer of soil made up of clay and other minerals and humus
  8. 12. Rich, fertile soil that is made up of about equal parts of clay, sand, and silt
  9. 15. The loose, weathered material on Earth’s surface in which plants can grow