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Rocks And Minerals
Test Description: Regents questions on rocks and minerals
Instructions: Answer all questions to get your test result.
1) Basalt contains the greatest quantity of which mineral?
A
biotite
B
olivine
C
pyroxene
D
potassium feldspar
2) Compared to felsic igneous rocks, mafic igneous rocks contain greater amounts of
A
quartz
B
aluminium
C
potassium feldspar
D
iron
3) Which mineral is white or colorless, has a hardness of 2.5, and splits with cubic cleavage?
A
halite
B
pyrite
C
calcite
D
quartzite
4) Which sedimentary rock is most likely to be changed to marble during regional metamorphism?
A
shale
B
siltstone
C
limestone
D
sandstone
5) An igneous rock which has crystallized deep below the Earth's surface has the following approximate composition: 70% pyroxene, 15% plagioclase, and 15% olivine. According to the Earth Science Reference Tables, what is the name of this igneous rock?
A
pegmatite
B
scoria
C
gabbro
D
basalt
6) Extremely small crystal grains in an igneous rock are an indication that the crystals formed
A
deep below the surface of the Earth
B
under high pressure
C
over a short period of time
D
from an iron-rich magma
7) The physical properties of a mineral are largely due to its
A
organic composition
B
luster
C
density
D
internal arrangement of atoms
8) Which characteristic provides the best evidence about the environment in which a rock was formed?
A
shape
B
size
C
texture
D
color
9) Large rock salt deposits in the Syracuse area indicate that the area once had
A
a warm, shallow sea
B
large forests
C
a range of volcanic mountains
D
many terrestrial animals
10) Igneous rocks form by which processes?
A
heat and pressure
B
erosion and deposition
C
melting and solidification
D
compaction and cementation
11) Most sedimentary rock has been formed by which two processes?
A
heat and pressure
B
erosion and deposition
C
compaction and cementation
D
melting and solidification
12) Sedimentary rocks formed by compaction and cementation of land-derived sediments are classified on the basis of
A
particle size
B
texture
C
composition
D
rate of formation
13) Which property is most useful in mineral identification?
A
texture
B
color
C
grain size
D
hardness
14) Certain minerals usually break along flat surfaces, while other minerals break unevenly. This characteristic is due to the
A
force with which the mineral is broken
B
luster of the mineral
C
internal arangement of atoms
D
age of the mineral
15) Which mineral scratches dolomite and is scratched by olivine?
A
plagioclase feldspar
B
halite
C
quartz
D
galena
16) Which mineral leaves a green-black powder when rubbed against an unglazed porcelain plate?
A
hematite
B
pyrite
C
graphite
D
halite
17) Which sedimentary rock would be formed by the compaction and cementation of particles 0.0008 centimeters in diameter?
A
sandstone
B
breccia
C
siltstone
D
shale
18) The grouping of rocks as igneous, sedimentary, and metamorphic is based primarily upon differences in
A
color
B
age
C
origin
D
size
19) Regional metamorphism causes mineral grains to
A
crystalize
B
smooth out and build up
C
disperse and thin out
D
align and flatten
20) What metamorphic rock type has the minerals pyroxene and mica, visible platy crystals of mica and shows a foliated texture?
A
metaconglomerate
B
gneiss
C
schist
D
phyllite
*select an answer for all questions
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