Introductory info Flashcards

(47 cards)

1
Q

types of landforms

A

coastal, fluvial, pedological, glacial, mass wasting, eolian, tectonics, and humans

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2
Q

examples of coastal landforms

A

beaches, marshes, swamps, deltas, platforms, terraces

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3
Q

examples of fluvial landforms

A

point bars, cut bank, flood plains, terrace, delta

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4
Q

examples of pedological landforms

A

soils, paleosols, geosols, catenas, fragipans

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5
Q

examples of mass wasting landforms

A

slumps, slides, falls, scarps, fans, debris flow

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6
Q

examples of eolian landforms

A

dunes, loess, ventifacts

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7
Q

what is loess

A

windblown silt that implies its glacially ground up “stuff”

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8
Q

examples of tectonic landforms

A

flat irons, scarps, plateaus, pediments

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9
Q

examples of human landforms

A

anything w straight lines, piles of debris

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10
Q

what are ventifacts

A

sand blasted by wind

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11
Q

what are flat irons

A

mountains go up and expose rooks, and then the streams erode it away into a triangle shape

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12
Q

what are the agents of change

A

gravity, river and oceans, glaciers, wind, and humans

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13
Q

what is the primary agent of change

A

gravity

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14
Q

how do rivers and oceans act as agents of change

A

waves, tides and sea levels; river fluctuations

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15
Q

what influences river fluctuations

A

climate determines how much water is in the system

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16
Q

how do glaciers and rivers act as agents of change

A

meandering rivers, glacial moraines

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17
Q

how do rivers act as agents of change

A

river down cuts and creates terraces when the climate changes; they move across the valley before glaciers advance

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18
Q

how does wind act as an agent of change

A

dunes that can be made of sand, silt, or clay

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19
Q

dunes do not equate to what? and why?

A

wind, the term dune refers to the shape

20
Q

how do humans act as agents of change

A

by removing or oversteeping slopes that cause mass wasting, dam failure, building buildings on cliffs, coastal construction

21
Q

.who championed geomorphology

A

william morris davis

22
Q

landscapes ____ overtime

23
Q

stages of evolution can be determined by… (WMD theory)

A

examining the characteristics of the landscape

24
Q

the characteristics of the landscape implies that ___ is the critical factor (WMD theory)

25
what causes issue with this theory (WMD theory)
plate tectonics will "upset" the landscape
26
what was G.K. Gilbert's input about process geomorphology
landroms are balanced between resting framework and driving forces acting to alter the landscape
27
what did G.K. Gilbert's theory imply
time is but one part of may that affect the landscape alteration
28
example of driving forces and resisting forces
rocks are the resisting framework, climate is the driving force. Rocks are eroding away but keeping the shape
29
the landscape is changing but also staying in _____
equilibrium
30
when landscapes are in equilibrium, the form ___ and the position ____
stays the same, changes
31
when a landscape is in equilibrium, what will happen to the shape if nothing is added to the system
keeps same shape forever
32
what is dynamic equilibrium
the balance between opposing forces that has a threshold. Once this threshold is overcome balance must be re-established under these new conditions
33
steady time
no change over a short time
34
graded time
small changes over longer time due to fluctuations in boundary conditions
35
cyclic time
same changes occur over time. the average conditions with time can become flat, featureless plane
36
base level
when erosion will occur
37
what are the driving forces
climate, gravity and internal heat
38
what is climate driven by
the sun, solar radiation interacting w earth's major systems; Milinkovich cycles
39
what does gravity determine
how much work will operate on all systems
40
what does internal heat drive
plate motion/ tectonic activity
41
what does internal heat control
the potential energy for work
42
rocks under the surface can ____ when pressure is applied by the others with the addition of ____
bend, heat
43
basin
extension
44
ridge/valley
compression
45
ridges are made up of what
more resistant rock types
46
valleys have what type rock
shale
47