h. Describe soil asconsisting of weatheredrocks and decomposed   organic material.
Essential Question
   What are the scientists  Pedologist    called that study soil?   Soil Formation            Soil is formed slowly as...
What is loam? Soil composed of sand,   silt, and clay in relatively even concentration
Soil Properties: Soil              Texture Definition:   the soil quality that is based  on the proportions of soil parti...
Soil Properties: Soil Structure Definition:   the arrangement of soil  particles Often one type of soil particles will  ...
Soil Leaching Soil leaching refers is the  movement of nutrient  elements from topsoil through  the soil profile. Leachin...
Soil Properties: Soil Fertility Definition: soil’s ability to hold  nutrients and to supply nutrients  to a plant Soils ...
Soil pH Soils can be acidic   or basic pH  scale  – Used to measure how acidic or    basic a soil is and ranges from 0 t...
Soil Horizons
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2012 soil

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  • Parent Rock Bedrock Residual Soil Transported Soil
  • Leaching
  • 2012 soil

    1. 1. h. Describe soil asconsisting of weatheredrocks and decomposed organic material.
    2. 2. Essential Question
    3. 3.  What are the scientists  Pedologist called that study soil? Soil Formation  Soil is formed slowly as rock (parent material ) erodes into tiny pieces near the Earth’s surface . Bedrock is the layer of rock just beneath soil.  Soil is made up of distinct Soil Layers horizontal layers called horizons . Range: organic upper layers to underlying rocky layers.
    4. 4. What is loam? Soil composed of sand, silt, and clay in relatively even concentration
    5. 5. Soil Properties: Soil Texture Definition: the soil quality that is based on the proportions of soil particles. Affects the soil’s consistency – The soil’s ability to be worked and broken up for farming Influences infiltration – Ability of water to move through the soil – Also known as percolation
    6. 6. Soil Properties: Soil Structure Definition: the arrangement of soil particles Often one type of soil particles will clump in one area, which can block the flow of water through the soil affecting soil moisture.
    7. 7. Soil Leaching Soil leaching refers is the movement of nutrient elements from topsoil through the soil profile. Leaching causes significant nutrient losses , particularly in humid regions with high precipitation. Leaching is a natural process caused mainly by precipitation , acidification and nitrogen saturation.
    8. 8. Soil Properties: Soil Fertility Definition: soil’s ability to hold nutrients and to supply nutrients to a plant Soils vary in the amount of nutrients it contains. Plants need nutrients (such as IRON ) to grow.
    9. 9. Soil pH Soils can be acidic or basic pH scale – Used to measure how acidic or basic a soil is and ranges from 0 to 14 . – The midpoint 7 is neutral. Above 7= basic . Below 7= acidic . The pH of a soil influences how nutrients dissolve in the soil.
    10. 10. Soil Horizons
    11. 11. Summarize the
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