landform and formation of landscapes Flashcards

1
Q

Landform

A

single unit that forms part of the general topography of earths surface , product of discrete set of processes

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2
Q

primary landform

A

created by tectonic plates movement and resulting in faulting folding nd warping of crust

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3
Q

secondary landform

A

landforms modified by weathering and erosion

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4
Q

erosion

A

occurs due to plates buckle and break

transport of material resulting form weathering and mass movement over potentially large distances

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5
Q

aggregation of landforms

A

product of areal expression of processes, volcanic landscape may consist of cones lava does and lava flows

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6
Q

denudation - degradation

A

processes that wear down landmasses - weathering and slope processes

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7
Q

weathering

A

disintegration or decomposition of rocks without distant removal

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8
Q

slope processes

A

spontaneous movement of material downslope due to gravity

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9
Q

degradation landforms

A

rock sea - rock fragments accumulate near original location

talus cone - rock fragments roll or fall downslope

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10
Q

agents of degradations nd erosion

A

water, ice wind waves and chemical dissolution

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11
Q

water

A

most effective and significant agent of erosion, effectiveness depends unmanly factors including slope, volume of water valley properties

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12
Q

glaciers

A

erode soil scour the surface and valley move deposit debris mountain glaciers widen and deepen valleys

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13
Q

wind

A

much less significant than water , only effective under some conditions , beaches and sandy deserts , abrasion by windburn particles

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14
Q

coastal waves

A

where land and sea contact both water and loose rocks can erode the landscape

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15
Q

chemical dissolution

A

soluble rocks such as limestone dissolve under certain climatic conditions last topography, collapse of these feature = sinkholes

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16
Q

aggradational processes

A

deposition of boded material builds up the landscape and can lower relief , many degradation agents including water and wind have the ability to transport and deposit aggradational landfpr,s