Is it Dirt or Soil???
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• Dirt
• Soil
• Residual Soil
• Transported soil
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• Rocks  smaller particles  tiny particles(Dirt)  Weathering and organic remains make Soil.
• Dirt is tiny particles of rock that has been weathered.
• Soil is dirt with organics in it.
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• The longer the rocks are exposed the more soil is made...
• It takes hundreds of years to make fertile soil.
• Rock is broken down and made into soil, sometimes it does transport into a new area and make new soil there.
(River delta)
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• Residual soils have formed in place and not been moved far from where it has been broken down and weathered.
• Transported has been moved from one area to another.
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• In order to protect our soil we need to understand how it is made.
• More plants means more soil. The water will carry away the soil.
• Save the trees!
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Dirt
• Lighter in color
• Lacking minerals
• Small un-weather rocks
• Fresh or recent dead things in it.
Soil
• Dark colored
• Rich in minerals
• No rocks
• Dead and decaying things in it.
Soil
Dirt
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• How is soil created from rock?
A. Physical Weathering without chemical weathering
B. Chemical weathering without physical weathering
C. Erosion without weathering
D. Weathering without erosion
– D
WHY???
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• The composition of soil that has formed in place is mostly by the local
A. Agent of erosion
B. Age of the bedrock
C. Slope of the land
D. Bedrock composition
– D
WHY?
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