CSES 2040 Test 2 (Auburn - Huluka)
Questions With Correct Answers
Aeration |- |CORRECT |ANSWER✔✔-the |ventilation |of |soil
Oxygen |availability |in |soils |is |affected |by |- |CORRECT |ANSWER✔✔-soil |macroporosity, |soil |
water |content, |O2 |consumption |by |respiring |roots |and |aerobic |microbes, |redox |potential
Poor |aeration |results |when |____________% |of |pores |are |filled |with |water. |- |CORRECT |
ANSWER✔✔-80-90%
Mass |flow |- |CORRECT |ANSWER✔✔-due |to |differences |in |pressure
Diffusion |- |CORRECT |ANSWER✔✔-due |to |concentration |differences
What |is |the |main |gas |exchange |process |in |soils? |- |CORRECT |ANSWER✔✔-diffusion
Redox |potential |(Eh) |- |CORRECT |ANSWER✔✔-tendency |to |give |or |accept |electrons
Oxidation |- |CORRECT |ANSWER✔✔-removal |of |an |electron |from |an |element
Reduction |- |CORRECT |ANSWER✔✔-addition |of |an |electron |to |an |element
Denitrification |- |CORRECT |ANSWER✔✔-causes |30% |of |the |total |loss |of |N |from |agricultural |
soils
, Factors |affecting |Soil |Aeration |- |CORRECT |ANSWER✔✔-drainage |of |excess |of |water, |rates |of |
respiration |in |soil, |subsoil |vs |topsoil, |soil |heterogeneity
What |percentage |of |ice-free |land |do |wetlands |cover? |- |CORRECT |ANSWER✔✔-14%
Three |basic |indicators |of |a |wetland |- |CORRECT |ANSWER✔✔-hydrophytic |vegetation, |water-
saturated |conditions, |hydric |soils
Hydric |soils |- |CORRECT |ANSWER✔✔-saturated |long |enough |during |periods |of |enough |
biological |activity |to |cause |anaerobic |conditions |to |occur
Benefits |of |wetlands |- |CORRECT |ANSWER✔✔-species |habitat, |water |filtration, |flooding |
reduction, |shoreline |protection, |commercial |and |recreational |activities, |nature |products
Why |is |soil |temperature |important? |- |CORRECT |ANSWER✔✔-affects |rates |of |physical, |
chemical, |and |biological |reactions
Factors |influencing |soil |temperature |- |CORRECT |ANSWER✔✔-solar |radiation, |specific |heat |
capacity |of |the |soil, |heat |of |vaporization |of |water
Aspect |(slope) |- |CORRECT |ANSWER✔✔-direction |the |slope |faces |with |respect |to |the |sun
Subsoil |temperatures |- |CORRECT |ANSWER✔✔-less |fluctuating
General |properties |of |soil |colloids |- |CORRECT |ANSWER✔✔-size: |very |small
surface |area: |large
surface |charges: |most |negative
Questions With Correct Answers
Aeration |- |CORRECT |ANSWER✔✔-the |ventilation |of |soil
Oxygen |availability |in |soils |is |affected |by |- |CORRECT |ANSWER✔✔-soil |macroporosity, |soil |
water |content, |O2 |consumption |by |respiring |roots |and |aerobic |microbes, |redox |potential
Poor |aeration |results |when |____________% |of |pores |are |filled |with |water. |- |CORRECT |
ANSWER✔✔-80-90%
Mass |flow |- |CORRECT |ANSWER✔✔-due |to |differences |in |pressure
Diffusion |- |CORRECT |ANSWER✔✔-due |to |concentration |differences
What |is |the |main |gas |exchange |process |in |soils? |- |CORRECT |ANSWER✔✔-diffusion
Redox |potential |(Eh) |- |CORRECT |ANSWER✔✔-tendency |to |give |or |accept |electrons
Oxidation |- |CORRECT |ANSWER✔✔-removal |of |an |electron |from |an |element
Reduction |- |CORRECT |ANSWER✔✔-addition |of |an |electron |to |an |element
Denitrification |- |CORRECT |ANSWER✔✔-causes |30% |of |the |total |loss |of |N |from |agricultural |
soils
, Factors |affecting |Soil |Aeration |- |CORRECT |ANSWER✔✔-drainage |of |excess |of |water, |rates |of |
respiration |in |soil, |subsoil |vs |topsoil, |soil |heterogeneity
What |percentage |of |ice-free |land |do |wetlands |cover? |- |CORRECT |ANSWER✔✔-14%
Three |basic |indicators |of |a |wetland |- |CORRECT |ANSWER✔✔-hydrophytic |vegetation, |water-
saturated |conditions, |hydric |soils
Hydric |soils |- |CORRECT |ANSWER✔✔-saturated |long |enough |during |periods |of |enough |
biological |activity |to |cause |anaerobic |conditions |to |occur
Benefits |of |wetlands |- |CORRECT |ANSWER✔✔-species |habitat, |water |filtration, |flooding |
reduction, |shoreline |protection, |commercial |and |recreational |activities, |nature |products
Why |is |soil |temperature |important? |- |CORRECT |ANSWER✔✔-affects |rates |of |physical, |
chemical, |and |biological |reactions
Factors |influencing |soil |temperature |- |CORRECT |ANSWER✔✔-solar |radiation, |specific |heat |
capacity |of |the |soil, |heat |of |vaporization |of |water
Aspect |(slope) |- |CORRECT |ANSWER✔✔-direction |the |slope |faces |with |respect |to |the |sun
Subsoil |temperatures |- |CORRECT |ANSWER✔✔-less |fluctuating
General |properties |of |soil |colloids |- |CORRECT |ANSWER✔✔-size: |very |small
surface |area: |large
surface |charges: |most |negative
