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CRSS Exam 1 Questions and Answers All Correct

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CRSS Exam 1 Questions and Answers All Correct Number of years ago that North America and Africa collided - Answer- 450 Mya Geometric shape si forms when bonded to 4 oxygens - Answer- Tetrahedron Name of N containing functional group on hummus that can be positively charged - Answer- Not s...

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  • October 29, 2024
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CRSS Exam 1 Questions
and Answers All Correct
Number of years ago that North America and Africa collided - Answer- 450 Mya

Geometric shape si forms when bonded to 4 oxygens - Answer- Tetrahedron

Name of N containing functional group on hummus that can be positively charged -
Answer- Not sure yet

Law that describes settling velocity of particles in water - Answer- Stokes law

Element that may be substituted for Al in clay structures - Answer- Mg

Four base cations - Answer- Ca, Na, K, Mg

A basic exchangeable cation other than Ca or Mg - Answer- Potassium, sodium

An acidic exchangeable cation other than H - Answer- Al, or NH4 (ammonium)

Parents material made by gravity, food on foothills - Answer- Colluvium

Mixed particle size parent materials laid down by melting glaciers - Answer- Glacial till

Term for any dense compacted area within the soil profile - Answer-

hydrometer - Answer- A float device for determining the specific gravity of the
electrolytes in a battery. This determines the state of charge.

diagnostic horizon deep dark A horizon high in bases - Answer- Mollic

diagnostic horizon with clayey blocky Bt with clay films - Answer- Argillic

diagnostic horizon with light colored shallow A horizon - Answer- Ochric

diagnostic horizon with light colored leached subsoil horizon - Answer- Albic

most common soil order in Georgia - Answer- ultisols

, t/f- cation exchange capacity is the ability of a soil to attract negatively charged ions -
Answer- False (its attracts cations duh)

which soil colloid has the greatest amount of permanent negative charge - Answer- 2:1
clays

what is most likely subsurface diagnostic horizon for a soil with minimal development
(blocky reddish color) but no clay films or illuvial humus - Answer- cambic

which mineral is very soluble in a humid temperate climate - Answer- gypsum

what happens to soil ph when you add calcium - Answer- decreases, basic

two soil components that have appreciable pH dependent charge - Answer- Fe oxides
and humus

T/F Sodium causes soil colloids to disperse - Answer- True

soil order--- acidic soil often with bleached horizon overlaying a dark brown horizon -
Answer- spodosol

element that commonly substitutes for Si in tetrahedra of clay minerals - Answer-
Aluminum

resistant primary mineral common in sand fraction - Answer- Quartz

metamorphic rock common in the piedmont - Answer- gneiss

2:1 clay mineral with very high CEC - Answer- montmillorite

weathering where H+ attacks primary minerals - Answer- hydrolysis

how to calc %BS - Answer- (Ca+Na+Na+K)/CEC=%BS


Iron oxides are primarily responsible for what soil colors? - Answer- Red

Which of the following parent materials is found in floodplains and transported by water?
- Answer- Alluvium

Feldspar +H—-> clay minerals + K is and example of - Answer- Hydrolysis
(Also happens to Muscovite)

In addition to iron name another agent that provides color to the soil? - Answer-
Potassium

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