Soils and weathering Flashcards

1
Q

To completely weather a granite

A

Salt in the ocean

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2
Q

to get soil you need

A

Minerals
Organic material
air
water

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3
Q

Minerals-

organics Humus

A

Matter-
Hold H20 provides nutrients
keeps soil from compacting

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4
Q

Physical weathering

A

Affects rock by breaking down smaller pieces

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5
Q

Chemical weathering

A

disintegrate the rock to happen you need liquid water

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6
Q

Most common weathering

A

Frost wedging

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7
Q

Root wedging

A

roots go threw things material

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8
Q

Exfoliation sheeting granite

A

layers

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9
Q

Dessert

A

hot no water

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10
Q

Tropics

A

fastest for weathering

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11
Q

Temp wet/dry like Missouri

A

second at weathering

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12
Q

Artic

A

slow cold solid form of water

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13
Q

organic material

A

(Humus) air and water

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14
Q

Soil

A

combo of decomposed material

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15
Q

Earth worms

A

Great for crops

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16
Q

Soils layers from top to bottom

A
O
A
E
B
C
R
17
Q

Age of earth

A

4.6 billion years old

18
Q

Universe age

A

13.7 billion years old