Science test Flashcards
what is teh typical order of occurrence
weaterh erosion depostion
what is foremd when water chemically combines wiith carbon doioxede
carbonic acid
______ ____ breaks down rocks by chagning teh compositon of the rocks
chemical weathering
carbon dioxide oxygen and water are often involved in chemical weather
true
of the conditonsl listed which is the most favorable for chemical weathering dry climate little vegetation or moist climate
moist climate
_____ ____ breaks down rocks through a physical process
mechanical weathering
when water enters a crack in a rock expns as it freezzes and cracks the rock what has occured
frost wedging
________ is a process wherevby thin sheets or layers of rock flake off lareger rocks often shaping theme ito rounded outcroppings or boulders
exfoliation
_______ breaks down rocks through the action of plants and animals
biological weatehreing
which of these is always involved in mass wasting gravity water wind waves
gravity
the downhill movement of lareg quantities of rocks an ssoil due to gravity is called
mass wasting
a type of mass wasting that slips just a short distance is ______
a slump
what is the process of wearing awyay rock and transporting sedimetns
erosion
what is the rapid moveent of allarge mass of any type of earth materials down a steep slope
landslide
a winter avalanche is not considered mass wasting because it involves only ice and snow
false
the size of boulders and rocks that can be carried by a stream i;s detemined by the volume of flowing water wider streams can carry larger rokcs and boulders
false
what is the motion of lareger sedimetn particles hopping along a stream bed
saltatation
most of the sediment load i a stream is carried as _____ ____
suspended sedimetns
an alluvial fan is like a river delta on land
true
the formation of a delta is most closely realted to the process of what
depostion
what is teh process of forming desert pavements by wind erosion
deflation
deflation is to desert pavemtsn a s ____ is to ventifacts
abrasion
what is a hill or ridge or windblown snadn q
sand dune
loess depostis are thought to have been formed by the action of what
wind
when two or more glaciers merge ad spread out onto a plain at the base of a mountain ragne it is called a what
valley glaciers
some galciers can be found near the equator but only in high mountains
ture
a rock glacier is basiclally a standard galcier that contains more rock than ice
true
a _______________ is a large mass of ice consisting mostly of recrystalied snow tha tmoves under the influence of gravity
glacier
what is teh most common galcier foroming high up in the moutnaisn
valley galcier
sudden glacier movement is called a ____ ___
glaciel surge
what is a bowl like depression left by a melte glacier often filled with water forming a small lake called
cirques
what is a galciated valley that ocean water has entered
fjord
what are any depostis of sedimetns left by a galcier called
glaciel drift
rock materials that eventually pile up along the sides of a galcier form fjords
false
waht is a ridge of till depostied by a galcier
morains
ong streamlined hills composed of unsorted glacial till are called
drumlins
what is teh name for the depression in the round moraine that remains when a block of glacie ice melts
kettle
what is a winding ridge of sorted sedimetns deposited by a metlwater stream flowing benath a glacier
eskers
thin bands of sediemtn formed on the bottomes of lakes that are fed by galcial meltwater are referred to as what
varves
counting varves is arelibale method of dating glacial lake sedimetns
false
in a few limited places in the world the orignal created soils can still be found
false
what is the layer of soil resulting from the weatrering of bedrock
hroizon
any fertile soil must contain what
organic material
is a valubale topsoil containeing equal parts sand and silt with about half as mushc clay
loam
soil in rainy climates tend sto be acidic
true
plucking is atype of erosion caused by whta
glacier
