Science Quiz / Weathering and Soils

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Can you name the Weathering and Soils?

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Score 0/38 Timer 10:00
HintAnswer
Two types of weathering:
1.
2.
The 1st type of weathering includes:
Ice freezing and thawing in cracks breaks rocks apart
Expansion after overlying material removed (unloading)
Roots open fractures
The 2nd type of weathering includes:
Water in weathering zone is weak carbonic acid
Dark silicates react with oxygen to form rusty oxides and clay minerals
Orthoclase in granite switches K for tiny H ions, becomes clay
Factors affecting rates of weathering:
1.
2.
3.
-
Light or dark silicates weather easily?
Warm and wet or cold and dry climates weathering is more frequent?
Soil:
HintAnswer
How is soil formed?
Factors affecting soil type:
1.
2.
3.
4.
5.
Soil profile from top to bottom:
O layer
A layer
E layer
B layer
C layer
Final layer
Soil Erosion:
Causes
Accelerated by
What protects topsoil?
Soil erosion clogs

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