8 Scie Test 4 Ch 4
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| abrasion | eroding action of windblown sand
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| aeolian | suspension, saltation, and creep, in which wind transports sediments
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| alluvial fan | fan-shaped deposit of sediments at the mouth of a dry stream bed in the desert
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| barrier islands | narrow, sandy islands that lie off the coast of the mainland
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| breakwater | a long pile of rocks deposited parallel to the shore to prevent erosion
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| carbonic acid | natural acid, found in rainwater and ground water, promotes chemical weathering of rock
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| caverns | limestone formations that have become filled with various passageways and large caves
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| chemical weathering | when minerals in rock react chemically with air or water, and the minerals weaken or even dissolve away, causing the rock to crumble
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| cirque | huge bowl-shaped depression dug out by a valley glacier
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| continental glacier | large sheets of glacial ice that cover huge areas of relatively flat land
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| creep | process in which particles too heavy to be lifted by the wind are rolled in short bursts
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| crevasses | the deep cracks that develop on the surface of a glacier
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| deflation | most important effect of wind erosion
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| delta | fan-shaped deposit of sediments at the mouth of a river
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| drainage basin | region of land drained by a stream or river system
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| drumlin | a low hill formed when a glacier overruns a moraine
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| erosion | the carrying away of rock fragments, such as by wind or running water
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| exfoliation | type of weathering involves the breaking or peeling away or rock into layers
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| fjord | fomed when a glacier-carved valley fills with seawater
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| floodplain | land that borders a river and is covered by river water in flood time
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| headwaters | the source of a river
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| horn | sharp, steeple-shaped point of a mountain with three or more cirques
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| ice caps | ice sheets smaller than continental glaciers
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| ice wedging | type of weathering that occurs when rainwater soaks into cracks in a rock and freezes, splitting the rock
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| karst | regions of the earth's surface where limestone is exposed and abundant
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| levee | natural ridge formed along the edge of a river's channel
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| limestone | type of rock most commonly associated with caverns
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| load | the sediments carried by a stream
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| loess | deposits of clay and silt left by a sandstorm
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| meander | a winding, looping curve in a river on flat ground
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| moraines | piles of debris left behind when a glacier melts
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| oxbow lake | lake formed when a sharp curve in a river is cut off from the rest of the river
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| physical weathering | when natural forces break down rocks
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| river | a large stream that carries water from the mountains to the sea
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| river system | feature formed by streams merging and flowing toward the sea as a large river
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| sea arch | produced when a sea cave is eroded continually
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| sea cliff | vertical face of rock that forms when the sea erodes lands
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| sea stack | pillar-like structure of rock fomed when the middle of a sea arch collapses
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| sinkhole | a large, funnel-shaped depression in the ground caused by cavern collapse
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| stalagmite | spirelike mass of dripstone on the floor of a cave
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| striae | large, deep grooves and scratches in rock, produced by glaciers
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| terracing | method of erosion prevention that modifies a smooth slope into a series of level, stairlike steps
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| tributary | one of numerous streams that feed into a river at various points
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| valley glacier | rivers of ice that slowly flow down from mountainous regions into valleys; aka alpine glacier
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| water | main agent of chemical weathering
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| weathering | natural processes that break down rocks
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