Test 4 Flashcards
What is a natural ridge formed along the edge of a river’s channel?_________________
levee
A pillarlike structure of rock formed when the middle of a sea arch collapses is a__________
sea stack
Deposits of clay and silt left by a sandstorm are__________
loess
The piles of debris left behind when a glacier melts are_________
moraines
What is produced when a sea cave is eroded continually?_____________
sea arch
A huge bowl-shaped depression dug out by a valley glacier is a___________
cirque
Which type of weathering involves the breaking or peeling away of rock into layers?__________
exfoliation
The feature formed by streams merging and flowing toward the sea as a large river is a_____________
river system
Large, deep grooves and scratches in rock, produced by glaciers, are__________
striae
A low hill formed when a glacier overruns a moraine is a___________
drumlin
When a glacier-carved valley fills with seawater, a ________________ forms
fjord
The most important effect of wind erosion is___________
deflation
What type of weathering occurs when rainwater soaks into cracks in a rock and freezes, splitting the rock?_____________
ice wedging
Which natural acid, found in rainwater and ground water, promotes chemical weathering of rocks?__________
carbonic acid
Ice sheets smaller than continental glaciers are__________
ice caps
Suspension, saltations, and creep, in which wind transports sediments, are_______________ processes
aeolian
Narrow, sandy islands that lie off the coast of the mainland are called___________
barrier islands
The sharp, steeple-shaped point of a mountain with three or more cirques is a____________
horn
Regions of the earth’s surface where limestone is exposed and abundant are called_______________ regions.
karst
A long pile of rocks deposited parallel to the shore to prevent erosion is a___________
breakwater
A large, funnel-shaped depression in the ground caused by cavern collapse is a___________
sinkhole
The eroding action of windblown sand is called___________
abrasion
A spirelike mass of dripstone on the floor of a cave is called a____________
stalagmite
The carrying away of rock fragments, such as by wind or running water, is called_____________
erosion
Particles too heavy to be lifted by the wind are rolled in short bursts through a process called_____________
creep
The type of rock most commonly associated with caverns is_____________
limestone
The natural processes that break down rocks are collectively called____________
weathering
The method of erosion prevention that modifies a smooth slope into a series of level, stairlike steps is______________
terracing
The sediments carried by a stream___________
load
Land that borders a river and is covered by river water in flood time____________
floodplain
Lake formed when a sharp curve in a river is cut off from the rest of the river___________
oxbow lake
Region of land drained by a stream or river system__________
drainage basin
Fan-shaped deposit of sediments at the mouth of a dry stream bed in the desert___________
alluvial fan
The source of a river________________
headwater
One of numerous streams that feed into a river at various points_____________
tributary
A winding, looping curve in a river on flat ground_______________
meander
Fan-shaped deposit of sediments at the mouth of a river___________
delta
A large stream that carries water from the mountains to the sea____________
river
Name the deep cracks that develop on the surface of a glacier._____________
crevasses
What is the main agent of chemical weathering?_____________
water
What are limestone formations that have become filled with various passageways and large caves called?______________
caverns
What is a vertical face of rock called that forms when the sea erodes land?______________
sea cliff
What are the two major types of glaciers?_________________, _______________
continental glacier
valley glacier
What are two general types of weathering?_____________ ____________
chemical weathering
physical weathering
