Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.



Published on

Chapter 12.2 Second period only

Published in: Education
  • Be the first to comment

  • Be the first to like this


  1. 1. Weathering, Soil, and Erosion12.2 Soil
  2. 2. Know✤ soil ✤ soil profile✤ parent material ✤ soil horizon✤ residual soil ✤ topsoil✤ transported soils ✤ subsoil
  3. 3. Understand✤ Soil is made of weathered rock and organic material.✤ Climate and other factors affect the composition of soils.
  4. 4. Do✤ Explain how soil forms.✤ Describe soil composition and the factors that affect it.
  5. 5. A-horizonResidual Transported (topsoil) soil soil B-horizon C-horizon Parent Profile of material mature soils Soil Arctic Type Desert Temperate Tropical
  6. 6. Name four factors that affect soilcomposition. ✤ Time; parent material; topography; climate
  7. 7. 12.2 #1. Describe the difference between aresidual soil and a transported soil. ✤ 12.2 #1. Residual soils form from the bedrock beneath it. Transported soil forms from parent material that originated in a different location.
  8. 8. #2. Sketch a soil profile andlabel A-, B-, and C- horizons.Describe what you are likelyto find in each horizon.✤ #2. A-horizon- is likely to contain humus and sand.✤ B-horizon is likely to contain iron oxides, clay and soluble minerals such as calcium and magnesium.✤ C-horizon- is likely to contain slightly weathered parent material.
  9. 9. #3. What rock materials are found insoil? ✤ #3. Sand, silt, and clay
  10. 10. #4. How does the amount of rainfall appear to affectwhether a soil is a grassland or a forest soil? Explain yourthinking. ✤ #4. It takes more rain to support a forest than it does to support grassland, thus, forest soil exists where there is more rain.
  11. 11. #5. How do you think the type of soil found in aparticular region might affect the lives of people inthe region? ✤ #5. The type of soil affects how easily crops can be grown and thus how large a population can be supported by local food growth.