soil Flashcards

1
Q

weathering is the
____
how

A

the ohysical breakdown and chemical alteration of rock on earths surface

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2
Q

chemical weathering

A

alters the chemistry of rocks and minerals

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3
Q

physical weathering

A

physical breakdown of earth

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4
Q

dwhen some rocks are more susceptible tp 2weathering than others it is called

(mushroom shape rock)

A

differential westhering

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5
Q

frosst wedging

can clay also frost wedge?

A

water gets into rock cracks
it freezes and widens the cracks due to expansion when h20 freezes

yes, esp in htown

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6
Q

what happens to surface area when a rock weathers more?

how to calc surface area?

A

of units x sides x

surface area inc

#of cubes

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7
Q

realtionship btw phys and che weathering?

A

inc in phys weathering= more exposed surface area, chemicals seep on surface area, it weathers mroe and cycle repeats

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8
Q

root wedging

A

roots grow seaching for water in soil thus weatherign rocks

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9
Q

exfoliation dome process?

A

igneous rock forms in the crust and weathering exposes the rock to the surface by breaking of SHEETS of it like an onion

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10
Q

where does soil come from/ composition?

A

45% rock materal 55 water process and animal matter

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11
Q

soil profies
what are they?
what are factos consistant in this?

A

composition of soil ins a specific area

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12
Q

munsell color chart

A
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13
Q

threee main crops in hosuton

A

cotton
sorgon
sugarbeets

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14
Q

o horizion

A

organic mattial, mostly plant materia

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