Describe the soil-formation process and components of soil.

Description should include

  • defining soil
  • discussing the importance of soil
  • explaining soil-forming factors (e.g., physical weathering, chemical weathering, biological weathering, parent material, climate, organisms, topography, time)
  • exploring soil origins (e.g., alluvial deposits, colluvial deposits, eolian deposits, marine deposits, lake deposits, volcanic deposits, Great Plains material, glacial drift, organic deposits)
  • explaining related terms and concepts (e.g., micronutrients, macronutrients, minerals, sand, silt, clay, organic matter, pore space, bedrock, humus, topsoil, weathering, soil profile, soil horizons, subsoil, pH).

Process/Skill Questions:

  • What is pedology?
  • What are the five soil-formation factors and their effects on soil formation?
  • What could be considered the sixth soil-formation factor?
  • How is the material content of soil determined?
  • What natural processes create soil?
  • How does the composition of soil affect its fertility?
  • How is soil formation influenced by organisms such as plants, micro-organisms (bacteria and fungi), burrowing insects, animals, and humans?
  • What is loam?

Teacher Resources: