Exam 3 part soils Flashcards

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1
Q

pedosphere

A

outermost layer of earth

interface of: biosphere, lithosphere, atmosphere, hydrosphere

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2
Q

soil

A

mixture of fragmented and weathered grains of minerals and rocks, with air and water, and layering. all influenced by climate and living organisms.

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3
Q

controls of soil formation

A
climate
relief
organisms
parent material
time
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4
Q

soil components

A

minerals 45%
water 40%
air 30%
organic matter 5%

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5
Q

soil profiles

A

O,A,E,B,C,R

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6
Q

Soil importance

A
regulates/stores water
cycles nutirnets
filters pollutants
stores gases
supports ag
sustains plant life
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7
Q

physical properties of soil

A

texture
structure
color

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8
Q

pedon

A

naturally occurring clumped column representing the soil profile.

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9
Q

texture

A

triangle thing

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10
Q

structure

A

prismatic
platy
blocky
granular

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11
Q

color

A

munsell color chart

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12
Q

soil classifications determined by

A

soil properties, observable and measurable

orders and suborders

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13
Q

orders

A

development weathering composition

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14
Q

suborders

A

climate, moisture, parent material

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15
Q

catena

A

regional sequence of soil profiles appearing in regular succession downslopes

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