Weathering
Weathering #2
Erosion & Water
Erosion & Water #2
Potluck
100
This is an element whose major ore is a type of soil: iron, zinc, aluminum, or uranium.
What is aluminum?
100
The chief ore of aluminum is: caliche, gossan, pedalfer, bauxite, or subsoil.
What is bauxite?
100
The gently sloping rock surface that forms at the base of mountains in arid regions playa, graben, pediment, or stratum.
What is pediment?
100
The dry lake beds in many deserts are: playas, pediments, bajadas, or mesas.
What are playas?
100
The process by which one stream loses a major portion of its headwaters to another stream is called: stream larceny, stream theft, stream piracy, or perifluvial capture.
What is stream piracy?
200
These factors enter into soil classification: age of the soil, parent material, structure of the soil climate and drainage, or all the above.
What is all of them?
200
Which does NOT break rocks down by prying the grains apart? freeze-thaw cycles, growth of plant roots, leaching, salt crystal growth along shorelines, or hydration of minerals.
What is leaching?
200
A drainage pattern in which streams flow in and out of lakes with irregular flow directions is: radial, rectangular, longitudinal, graded, or deranged.
What is deranged?
200
The feature separating one drainage basin from another is a(an): divide, valley, natural levee, point bar, or alluvial fan.
What is a divide?
200
All of the sediment carried by saltation and rolling and sliding along a stream bed is the: suspended load, bed load, drainage capacity, channel pattern, or stream profile.
What is the bed load?
300
Rocks weather fastest when: cold and dry, always wet, hot and dry, or damp.
What is damp?
300
The layers or horizons in a soil profile result mostly from successive deposition of layers, pressure of the overlying soil, decreasing sunlight with depth, or differences in leaching and deposition with depth.
What are differences in leaching and deposition with depth?
300
A stream can lengthen its channel by: runoff, hydraulic action, headward erosion, or downcutting.
What is headward erosion?
300
Erosional remnants of floodplains that are higher than the current level of a stream are: oxbow lakes, incised meanders, cut banks, natural bridges, or stream terraces.
What are stream terraces?
300
The world's best agricultural soils are: alfisols, oxisols, spodosols, or mollisols?
What are mollisols?
400
A transported soil would form from: a lava flow, a sedimentary rock, fractured granite, or flood-plain deposits.
What is flood-plain deposits?
400
A deposit of calcite or gypsum that forms in the subsurface of arid soils: pedalfer laterite caliche mollisol
What is caliche?
400
This is how levees form along rivers: built by Army Corps of Engineers, built up by deposits laid down when the stream floods, form when clay along the river bank dries out and swells up, or are piled up by aquatic organisms.
What is the?y are built up by deposits laid down when the stream floods
400
The removal of thin layers of soil by water over a more or less continuous surface is: gullying, leaching, sheet erosion, exfoliation, or weathering.
What is sheet erosion?
400
A dam will most likely: accelerate erosion upstream, not affect the river downstream, cause the reservoirs to fill with sediment eventually, or accelerate erosion above the reservoir.
What is cause the reservoirs to fill with sediment eventually?
500
This is why small particles weather faster than large ones: They have more surface area for chemical reactions, They can be more easily eaten by soil organisms, They are easier to break mechanically, or They are made of more soluble minerals.
What is they have more surface area for chemical reactions?
500
This is how rain forests can be so lush if the soil is so poor? they get nutrients from rain water, the organisms have evolved to do without soil nutrients, human slash-and-burn agriculture returns nutrients to the soil, or the ecosystem is very effective at recycling nutrients.
What is the ecosystem is very effective at recycling nutrients?
500
If you see a stream cutting right through a ridge, this landscape is called: old-age landscape, rift valley, antecedent or superposed drainage, rejuvenated landscape, or peneplain.
What is antecedent or superposed drainage?
500
This is NOT a major factor in arid erosion: lack of vegetation, intense chemical weathering, thin soil cover, or episodic rainfall.
What is intense chemical weathering?
500
An old-age stream: is at least 10,000 years old, os at least 1,000,000 years old, has a straight course with few bends is of no definite age but flows across a low landscape and has many meanders.
What is of no definite age but flows across a low landscape and has many meanders?
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