Rocks 2 Of 5 Question Preview (ID: 838)


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What type of rocks are formed by processes powered by the Sun?
a) sedimentary rocks
b) metamorphic rocks
c) igneous rocks
d) no rocks are formed by the energy of the Sun

Where is the energy source found that drives the processes that form igneous and metamorphic rocks?
a) Earth's interior
b) the Sun
c) the wind
d) moving water

A rock that forms when magma hardens beneath Earth's surface is called an
a) intrusive metamorphic rock
b) intrusive igneous rock
c) extrusive sedimentary rock
d) extrusive igneous rock

Which of the following is an example of an extrusive igneous rock?
a) rhyolite
b) granite
c) andesite
d) coal

A rock that forms from cooling lava is classified as an
a) extrusive igneous rock
b) intrusive igneous rock
c) extrusive metamorphic rock
d) intrusive volcanic rock

When large masses of magma solidify far below the Earth's surface, they form igneous rocks that have a
a) coarse grained texture
b) glassy texture
c) clastic texture
d) fine grained texture

The igneous rock texture that is characterized by two distinctly different crystal sizes is called
a) porphyritic texture
b) coarse grained structure
c) fine grained texture
d) glassy texture

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) porphyritic texture
c) coarse grained texture
d) fine grained texture

As the rate of cooling of igneous rocks increases, the size of the crystals that form
a) decreases
b) increases
c) is not affected
d) cannot be determined

Igneous rocks that crystallize from magma and are composed almost entirely of quartz and feldspar have a(n)
a) granitic composition
b) andestic composition
c) utramafic composition
d) basaltic composition

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