CH 27 Flashcards

(66 cards)

1
Q

is the process that involves the physical or chemical breakdown of material on Earths surface.

A

weathering

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2
Q

is a mixture of weathered rock,organic matter,water, and air that is capable of supporting plant life

A

soil

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3
Q

is the removal of surface material through the process of weathering

A

erosion

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4
Q

as rocks weather, erosional agents like water,ice,wind,and gravity moved eroded materials from one place to another in a process

A

sediment transport

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5
Q

the land area that gathers water for a major river

A

drainage basin

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6
Q

the movement of water parallel to the shoreline

A

long shore current

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7
Q

when the erosional agent slows down or melts, it drops this sediment load process

A

deposition

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8
Q

what is weathering

A

the break down of materials on earths surface

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9
Q

do rocks weather at the same rate

A

rock formation weather at different rates(rock type or landscape)

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10
Q

what are the two main factors that determine how fast rock will weather

A

rock type and landscape

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11
Q

what are the two types of weathering

A

mechanical and chemical weathering

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12
Q

what type of change happens with mechanical weathering

A

physical changes

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13
Q

what type of change happens with chemical weathering

A

chemical changes

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14
Q

what are 3 specific types of mechanical weathering

A

frost wedging, biological activity, collisions

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15
Q

what causes frost wedging

A

when water collects in the cracks of rocks and freezes

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16
Q

what is the cycle called during frost wedging

A

freeze thaw cycles

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17
Q

what causes biological activity

A

plant and animal activity

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18
Q

what causes weathering during collisions

A

when rocks fall from a cliff or tumble through turbulent rivers

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19
Q

what is soil

A

is a mixture of weathered rock, organic matter, water, and air that is capable if supporting life

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20
Q

what is parent material

A

material which soil forms from

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21
Q

what are soil horizons

A

are the different layers of soil

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22
Q

how many soil horizons are there

A

6 different horizons

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23
Q

(true/false)all soils contain every soil horizons

A

false

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24
Q

what are the specific soil horizons

A

O, A, E, B, C, R

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25
what does the first soil horizons contain
organic material
26
what is the second horizon mostly made up of
mostly minerals
27
which layer does leaching occur
E horizon
28
which horizon collects materials from previous horizons
B horizon
29
which layer is partially weathered bedrock
C horizon
30
which layer is unweathered bedrock
R horizon
31
which soil horizons make up the top soil
A and O horizons
32
which soil horizons make up the sub soil
E and B horizons
33
which horizons make up the true soil
O, A, E, B horizons
34
what is the difference between weathering and erosion
weathering the breakdown of materials | erosion is the removal of material
35
(true/false)as the slope of a river decreases, the rivers speed decreases
true
36
what are small streams that flow into larger rivers called
tributaries
37
what is a land area that gathers water for a major river is called
drainage basin
38
what is a boundary that separates distinct drainage basins is called a
drainage divide
39
as water flows downhill under the influence of gravity, water erodes earths surface creating what
channels
40
young rivers are ___ due to fast movement
V-Shaped
41
____rivers are wide with smooth and gentle slopes
mature
42
when rivers flood and drop their sediment load what is that land form called
floodplains
43
what are fan shaped sediment deposit that will form at the mouth of the river
deltas
44
what are the branching channels created by deltas
tributaries
45
what is it called where a mouth of a river or a stream enters a dry land
alluvial fans
46
what are the two types of glaciers
valley,and continental glaciers
47
where can each glaciers be found
valley: high mountainous regions continental: ice sheets that occupy large land areas in colder climates
48
where are the two continental glaciers
Greenland, Antarctica
49
what is a cirque
bowl shaped basins
50
what is an Arete
form where 2 adjacent valley glaciers meet and erode a long sharp ridge line
51
what is a horn
sharpened peaks
52
what do tributary glaciers create
hanging vallies
53
what are tributary glaciers
small glaciers that feed into large glaciers
54
what shape of valleys do valley glaciers create
U shape valleys 9098
55
which side of a dune does erosion occur
the windward side
56
which side does deposition occur
the leeward side
57
what is deflation
the removal of small particles by wind, leaving heavier particles behind
58
what is desert pavement
when small particles are removed, the remaining surface
59
what does the shape and size of land forms depend on due to wind
wind speed, amount of time the wind blows, sediment supply
60
what are three land forms created by erosion
sea stacks, sea arches , coastal cliffs
60
what are three land forms created by erosion
sea stacks, sea arches , coastal cliffs
61
what are two examples of wave deposition
sand bars, sand spits
62
what is a sand bar
land forms that are parallel to the shoreline
63
what is a sand spit
sand bars that extend into the water from land and curve back toward land in a hook shape
64
what is mass wasting caused by
snow, heavy rains, earthquakes, and human activity
65
what are some examples of mass wasting
rock slides, mud flows, landslides