Weathering and Soils Discussion Questions

QUESTION 1

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

1. Acid rain results most directly in
   chemical weatheringphysical weatheringbiological weathering

3 points   

QUESTION 3

1. What type of weathering does not result in a change in chemical form?
   chemical weatheringphysical weatheringbiological weathering

3 points   

QUESTION 4

1. The formation of new iron oxide minerals in an iron-bearing rock can result from
   oxidationcarbonationfrost-wedging

3 points   

QUESTION 5

1. Which human activity can accelerate weathering rates?
   road buildingair pollutionboth of the above

3 points   

QUESTION 6

1. What essential natural resource is produced by weathering activity?
   watersoilair

3 points   

QUESTION 7

1. 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

1. Chemical weathering can increase physical weathering rates because it increases the exposed surface area.
   True False

2 points   

QUESTION 9

1. The more jointed a rock is, the slower it weathers.
   True False

2 points   

QUESTION 10

1. What is humus made of?
   tiny rock fragmentsliving plantsdecayed plant and animal materials

3 points   

QUESTION 11

1. 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

1. Soils that are dominated by sand are called
   fine-texturedmedium-texturedcoarse-textured

3 points   

QUESTION 13

1. Alkaline soils are most common in
   arid and semi-arid regionshumid areastemperate agricultural fields

3 points   

QUESTION 14

1. Which of the following are the largest-sized particles in soil?
   sandsiltclay

3 points   

QUESTION 15

1. Soil particles aggregate together into
   pedshorizonsprofiles

3 points   

QUESTION 16

1. The parent material in a soil profile is called the
   O horizonB horizonC horizon

3 points   

QUESTION 17

1. Ultisols are most likely found in
   dry climatesvery cold climateswarm, humid climates

3 points   

QUESTION 18

1. 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

1. Most soil erosion is caused by
   windglaciersrunning water

3 points   

QUESTION 20

1. 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

1. 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

1. 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

1. 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

1. 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

1. Which of the following is NOT a limiting factor for good agricultural land?
   strongly sloping landslow surface runoffcoarse-textured soil

3 points   

QUESTION 26

1. 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

1. The rapid movement of material down a curved surface is called
   creepslumpsolifluction

3 points   

QUESTION 28

1. Which of the following can cause a landslide to be very fast?
   steep slopehigh water contentboth of the above

3 points   

QUESTION 29

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

QUESTION 30

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

QUESTION 31

1. How can landslides impact wildlife?
   pollute local water bodiesremove forests necessary for habitatboth of the above

3 points   

QUESTION 32

1. Landslides are most common in
   mountainous areasthe Central Plains of the U.S.shorelines of the southeast U.S.

3 points   

QUESTION 33

1. Soil creep is an example of a rapid mass movement process.
   True False

2 points   

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Weathering and Soils Discussion Questions was first posted on January 30, 2024 at 10:52 am.
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