Section 1
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soil creep
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Last updated
6 years ago
Date created
Mar 1, 2020
Cards (54)
Section 1
(50 cards)
soil creep
the very slow downslope movement of soil and rock fragments
erosion
physical processes like wind or running water may cary away away the rock fragements
tributaries
continue to feed into the river at various points along its course increasing the amount of water that carries it
floodplain
land that borders a river and is covered by river water in flood time
Mass wasting
the process in which gracity causes the downslope movements of rock, soil, volcanic ash, snow, or ice
caverns
various passageways and large caves
karast region
regions of the earths surface where exposed and abundant
drainage basin
the region of land drained by a river system
water
the main agent of chemical weathering
continental glaciers and valley glaciers
TYPES OF glaciers
Avalanche
a mass of ice and snow abruptly disloging from a mountain face
deflation
the most important effect of wind erosion
carbonic acid
a weak acid produced when carbon dioxde in the air dissolves in rain or groundwater
kettles
large hole left from the melting of huge chunks of glacail ice lodged in till o outwash
sea arches
continuted erosion of sea caves
baRRIE ISLANDS
NARROW SANDY ISLANDS THAT LIE OFF THE COAST OF THE MINERAL
river system
consists of all the streams that merge and flow toward the sea as a large river
alluvail fan
the sediments are left on the plain in a deltalike depoist
weathering
the process by which rocks are broken down by the forces of nature
aeolian processes
wind made
cirque
a valley glacier slowly scoops out a huge bowl-shape depression
caves
networks of underground cavities
physical and chemical weathering
natural forces break down rocks
gully
unning water may eventually carve a channel
horn
more ciques cut into a moutain peak
oxbow lake
cutoff form the rest of the river cresent-shaped body of water
Mudflows
the most fluid and fastest type of mass wasting
ice caps
smaller ice sheets
sea cliff
a vertical faced rock
forjd
valley fills with seawater
headwaters
the source of a river
delta
the mouth of the river into the sea
sea stack
forms when a sea arch collapses
levees
forming natural ridges
stalagmite
water dripping from the celeing may produce a cone-shaped
ice age
this period of widespread glaciation
sinkhole
a large funnel-shaped depression in the ground
rivers
large stream that carry water from the mountains to the sea
Abrasion
the eroding action of windblown sand
crevasses
the surface of a glacier often developed deep cracks and fissures
load
the materail carried by a stream
straie
large hard rocks pused along by the glacierproduce deep grooves and scrachets
drainage divide
two adjoining drainge basins are separated
meanders
winding looping curves
drumline
a glacier advances again in the winter it may overrun its moraines smoothing the till into low hills
gullying
in the ground that cannot to repaired by ordinary cultivation
Loess
when a dust storm weakens, it drops its load over a large area, creating a thick layer of clay and silt.
exfoliation
which involes the breaking or peelling away of rock in layers `
ice wedging
occurs when rainwater or melted ice soaks into tiny cracks in a rock and freezes
moraine
an accumulation of till left by a retreating glacier
Section 2
(4 cards)