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Rocks 2 Of 5
Test Description: Rocks
Instructions: Answer all questions to get your test result.
1) What type of rocks are formed by processes powered by the Sun?
A
no rocks are formed by the energy of the Sun
B
metamorphic rocks
C
igneous rocks
D
sedimentary rocks
2) Where is the energy source found that drives the processes that form igneous and metamorphic rocks?
A
Earth's interior
B
the Sun
C
moving water
D
the wind
3) A rock that forms when magma hardens beneath Earth's surface is called an
A
intrusive metamorphic rock
B
extrusive igneous rock
C
extrusive sedimentary rock
D
intrusive igneous rock
4) Which of the following is an example of an extrusive igneous rock?
A
rhyolite
B
coal
C
andesite
D
granite
5) A rock that forms from cooling lava is classified as an
A
intrusive igneous rock
B
intrusive volcanic rock
C
extrusive igneous rock
D
extrusive metamorphic rock
6) When large masses of magma solidify far below the Earth's surface, they form igneous rocks that have a
A
glassy texture
B
coarse grained texture
C
fine grained texture
D
clastic texture
7) The igneous rock texture that is characterized by two distinctly different crystal sizes is called
A
fine grained texture
B
coarse grained structure
C
porphyritic texture
D
glassy texture
8) Lava that cools so quickly that ions do not have time to arrange themselves into crystals will form igneous tocks with a
A
glassy texture
B
fine grained texture
C
coarse grained texture
D
porphyritic texture
9) As the rate of cooling of igneous rocks increases, the size of the crystals that form
A
increases
B
cannot be determined
C
is not affected
D
decreases
10) Igneous rocks that crystallize from magma and are composed almost entirely of quartz and feldspar have a(n)
A
basaltic composition
B
utramafic composition
C
andestic composition
D
granitic composition
*select an answer for all questions
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