Weathering, Soil, and Erosion12.2 Soil
Know✤   soil                ✤   soil profile✤   parent material     ✤   soil horizon✤   residual soil       ✤   topsoil✤   ...
Understand✤   Soil is made of weathered rock and organic material.✤   Climate and other factors affect the composition of ...
Do✤   Explain how soil forms.✤   Describe soil composition and the factors that affect it.
A-horizonResidual       Transported                     (topsoil)  soil             soil              B-horizon         C-...
Name four factors that affect soilcomposition.     ✤   Time; parent material; topography; climate
12.2 #1. Describe the difference between aresidual soil and a transported soil.        ✤   12.2 #1. Residual soils form fr...
#2. Sketch a soil profile andlabel A-, B-, and C- horizons.Describe what you are likelyto find in each horizon.✤   #2. A-h...
#3. What rock materials are found insoil?      ✤   #3. Sand, silt, and clay
#4. How does the amount of rainfall appear to affectwhether a soil is a grassland or a forest soil? Explain yourthinking. ...
#5. How do you think the type of soil found in aparticular region might affect the lives of people inthe region?          ...
12.2
12.2
12.2
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12.2

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Chapter 12.2 Second period only

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  • Transcript of "12.2"

    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.

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