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Multiple Choice Quiz
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1
A sedimentary rock can be:
A)only produced by cooling of magma.
B)produced from weathered products of pre-existing rocks.
C)any hard, solid substance on Earth's surface.
D)a naturally occurring, hard, solid substance.
2
The detrital sedimentary rocks:
A)range from conglomerates to shales.
B)form at the Earth's surface.
C)form from mechanical weathering of other rocks.
D)all of these
3
Where do sediments come from?
A)Sediment is formed from magma.
B)Rock weathering produces sediment.
C)Sediments originally formed as dust fell to Earth from outer space.
D)Sediment is formed as rocks are buried and crushed beneath the Earth's surface.
4
Based on your experience, which of these environments will produce sediments with cross-bedding?
A)a stream.
B)a nearshore marine environment.
C)a desert.
D)cross-bedding may develop in all these environments.
5
Particles of sediment from 4 mm to 2 mm diameter are called:
A)clay.
B)silt.
C)sand.
D)gravel.
6
Rounding is:
A)weathering of sharp edges and corners of bedrock exposed at Earth's surface.
B)the grinding away of sharp edges and corners of rock fragments during transportation.
C)the relative sphericity of a grain.
D)all of these
7
Compaction and cementation are two common processes associated with:
A)metamorphism.
B)sedimentation.
C)transportation.
D)lithification.
8
Which of the following is a chemical sedimentary rock?
A)limestone
B)rock salt
C)rock gypsum
D)All of these are chemical sedimentary rocks.
9
The major difference between sandstone and conglomerate is:
A)grain cementation.
B)grain composition.
C)grain rounding.
D)grain size.
10
Which of the following is a type of sandstone?
A)breccia.
B)conglomerate.
C)arkose.
D)All of these are types of sandstone.
11
Shale differs from siltstone in that:
A)there is no difference between shale and siltstone.
B)shale has smaller grains than siltstone.
C)shale is angular and fissile whereas siltstone is rounded.
D)shale has larger grains than siltstone.
12
The chemical element found in dolomite that is not found in limestone is:
A)oxygen.
B)magnesium.
C)carbon.
D)calcium.
13
A body of sedimentary rock of considerable thickness and with features that distinguish it from adjacent rocks is:
A)a depositional environment
B)a graded bed.
C)a formation.
D)a layer.
14
If sea level rises or the land sinks, what is likely to occur?
A)a graded bed will form at the shoreline
B)a tidal wave.
C)a transgression.
D)a regression
15
The process whereby rocks are changed to sediment is called:
A)metamorphism.
B)weathering.
C)transport.
D)abrasion.
16
A sedimentary rock composed of rounded particles of gravel is called:
A)gravelstone.
B)sandstone.
C)conglomerate.
D)breccia.
17
Sedimentary particles with a size range smaller than 1/256 mm:
A)cobbles.
B)clay.
C)boulders.
D)gravel.
18
A layer in which the grain size becomes smaller vertically within the layer is called:
A)is not observed in nature.
B)graded bedding.
C)cross-bedded.
D)foliated.
19
Cross-bedding observed in sand dunes can be used:
A)to determine the height of the sand dune.
B)to determine the speed of the wind.
C)to determine the direction the wind was blowing.
D)all of these
20
Sedimentary rocks provide clues about:
A)depositional environments.
B)The plate tectonic setting when the sediment was deposited.
C)where the sediments originally came from.
D)All of these are correct.





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