Weathering and Soils Discussion Questions

30 Jun Weathering and Soils Discussion Questions

Question Description
QUESTION 1
Weathering is defined as taking place “in situ.” This means that weathering
involves the transport of earth materialsinvolves the breakdown of materials in their original locationonly takes place certain seasons of the year
3 points

QUESTION 2
Acid rain results most directly in
chemical weatheringphysical weatheringbiological weathering
3 points

QUESTION 3
What type of weathering does not result in a change in chemical form?
chemical weatheringphysical weatheringbiological weathering
3 points

QUESTION 4
The formation of new iron oxide minerals in an iron-bearing rock can result from
oxidationcarbonationfrost-wedging
3 points

QUESTION 5
Which human activity can accelerate weathering rates?
road buildingair pollutionboth of the above
3 points

QUESTION 6
What essential natural resource is produced by weathering activity?
watersoilair
3 points

QUESTION 7
A limestone statue slowly loses many of its features over time and becomes flat and smooth. This is likely because of
physical weatheringchemical weatheringbiological weathering
3 points

QUESTION 8
Chemical weathering can increase physical weathering rates because it increases the exposed surface area.
True False
2 points

QUESTION 9
The more jointed a rock is, the slower it weathers.
True False
2 points

QUESTION 10
What is humus made of?
tiny rock fragmentsliving plantsdecayed plant and animal materials
3 points

QUESTION 11
There are five main factors of soil formation. State what these are and explain how each one contributes to soil profile development.
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4 points

QUESTION 12
Soils that are dominated by sand are called
fine-texturedmedium-texturedcoarse-textured
3 points

QUESTION 13
Alkaline soils are most common in
arid and semi-arid regionshumid areastemperate agricultural fields
3 points

QUESTION 14
Which of the following are the largest-sized particles in soil?
sandsiltclay
3 points

QUESTION 15
Soil particles aggregate together into
pedshorizonsprofiles
3 points

QUESTION 16
The parent material in a soil profile is called the
O horizonB horizonC horizon
3 points

QUESTION 17
Ultisols are most likely found in
dry climatesvery cold climateswarm, humid climates
3 points

QUESTION 18
Once nutrients enter the soil, they tend to stay there and are no longer considered a part of global nutrient cycles.
True False
2 points

QUESTION 19
Most soil erosion is caused by
windglaciersrunning water
3 points

QUESTION 20
Describe the connection between soil erosion and water quality and how water quality is affected by soil erosion.
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4 points

QUESTION 21
Several U.S. laws of environmental protection limit activities that can cause soil erosion. What are four ways that human activities can lead to soil erosion? Explain how each of these affects the soil.
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4 points

QUESTION 22
Leaving crop residue on the soil surface after harvest can
remove nutrients from the soilreduce a need for chemical pesticidesreduce erosion and cut down on water pollution
3 points

QUESTION 23
Tall trees grown around agricultural fields can
buffer the effects of windaccelerate soil erosion by blocking in the landprevent water runoff
3 points

QUESTION 24
Which of the following agricultural methods would likely lead to MORE sedimentation and accumulation of soil in local rivers and streams?
terrace farmingconservation tillageintensive tillage
3 points

QUESTION 25
Which of the following is NOT a limiting factor for good agricultural land?
strongly sloping landslow surface runoffcoarse-textured soil
3 points

QUESTION 26
Where do landslides happen in the United States?
only along the Pacific coastonly along the Appalachian Mountain areain any of the 50 states
3 points

QUESTION 27
The rapid movement of material down a curved surface is called
creepslumpsolifluction
3 points

QUESTION 28
Which of the following can cause a landslide to be very fast?
steep slopehigh water contentboth of the above
3 points

QUESTION 29
Define soil creep and explain the conditions under which it normally happens.
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4 points

QUESTION 30
Describe the differences and similarities between earth flows and mudflows.
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4 points

QUESTION 31
How can landslides impact wildlife?
pollute local water bodiesremove forests necessary for habitatboth of the above
3 points

QUESTION 32
Landslides are most common in
mountainous areasthe Central Plains of the U.S.shorelines of the southeast U.S.
3 points

QUESTION 33
Soil creep is an example of a rapid mass movement process.
True False
2 points

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