chapter 27.1/27.2 Flashcards

(55 cards)

1
Q

is the process that involves the physical or chemical breakdown of materials on earths surface.

A

weathering

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2
Q

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

A

soil

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3
Q

is the removal of surface materials through the process of weathering.

A

erosion

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4
Q

as rocks weather,erosional agents like water, ice, wind , and gravity move eroded materials from one place to another

A

sediment transport

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5
Q

when the erosional agent slows down (in case of water, wind or gravity) or melts (in case of glaciers),it drops this sediment load.

A

deposition

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6
Q

the land area that gathers water for a major river

A

drainage basin

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7
Q

the movement of water parallel to the shoreline

A

longshore current

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8
Q

what is the difference between weathering an erosion?

A

weathering is the breakdown of materials,erosion is the removal of surface materials

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9
Q

when the slope of a river decreases what happens to the rivers speed?

A

it also decreases

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10
Q

what are small streams called that flow into larger rivers?

A

tributaries

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11
Q

what is the land are called that gathers water for a major river

A

drainage basin

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12
Q

what is the boundary called that separates distinct drainage basin?

A

drainage divide

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13
Q

as water flows downhill under the influence of gravity,water erodes earths surface creating?

A

channels

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14
Q

what shape do young rivers carve out of Earths surface do to fast movement?

A

V-shaped

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15
Q

what type of rivers are wide with a smooth and gentle slope?

A

mature

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16
Q

when rivers flood and drop their sediment load what

A

flood plane

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17
Q

when a fan-shaped sediment deposit that forms out the mouth of a river is called?

A

delta

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18
Q

what are Distributaries?

A

branching channels created by deltas

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19
Q

what is it called when a river/stream enters into dry land?

A

alluvial fans

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20
Q

what are the two types of glaciers?

A

valley glaciers and continental glaciers

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21
Q

where do valley glaciers form?

A

high mountainous regions

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22
Q

where do continental glaciers form?

A

colder climates and they occupy large land area

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23
Q

where are the two continental glaciers located?

A

Greenland and Antarctica

24
Q

what is a cirque?

A

bowl shaped basin

25
what is an arete?
a long shape ridge line that is create between 2 valley glaciers
26
what is a horn is a mountainous region?
sharpened peaks
27
what shape of valley do valley glaciers form?
U-shaped valleys
28
what are tributary glaciers?
small glaciers that feed into larger glaciers
29
what type of valleys do tributary glaciers form?
hanging valleys
30
what are 3 land form created by wave erosion?
coastal cliff, sea arches, sea stacks
31
what are 2 land forms created from wave deposition
sand bars and sand spits
32
what are sand bars?
land forms that are parallel to the shoreline
33
what are sand spits?
are like sand bars but they curve back torwds land
34
what are some things that can triggare mass wasting?
heavy rain, earthquakes, and human activites
35
some examples of mass wasting
rock slides, mud flows, and landslides
36
a process by which water enters earth and becomes groundwater below the surface
infiltration
37
the upper boundary of the saturated zone
water table
38
a rock unit that can transfer water through its pore space
aquifer
39
a material is the percentage of the materials total volume that is pore space
porosity
40
a process of assigning an exact numerical age to an organism, an object, or an event.
absolute dating
41
a process of placing objects or events in their proper order in time
relative dating
42
Hutton´s idea- which is the law of nature operate today as they have in the past
uniformitarianism
43
in an undisturbed sequence of sedimentary rock layers, the youngest rock will be at the top and the oldest rocks will be at the bottom
principle of superposition
44
gaps in the rock record during which either erosion occurred or deposition was absent
unconformities
45
the remains or traces of organisms found in the geologic rock record
fossils
46
what are aquitards?
layer of sediment that doesn´t allow water to go through
47
how are water springs formed?
water tables that meets earths surface
48
what is an artesian well?
wells drilled into pressurized aquifers
49
what is a cone of depression?
where the direct the water flows towards the well
50
absolute dating
the process of assigning an exact numerical age to an organism, an object,or event
51
relative dating
the process of placing objects or events in their proper order in time
52
uniformitarianism
states that the law of nature operate today as they have in the past
53
principle of superposition
states that in an undisturbed sequence of sedimentary rock layers, the youngest rocks will be at the top and the older ones will be at the bottom
54
unconformity
gaps in the rock record during which either erosion occurred or deposition was about
55
fossil
the remains or traces of organisms found in the geologic rock record