*Ch 6 Rocks
Igneous
Rock
Sedimentary
Rock
Metamorphic
100
100
100
100
Grab
Bag
100
200
200
200
200
200
300
300
300
300
300
400
400
400
400
400
500
500
500
500
500
Terms
Rock
Rock that forms when
magma cools and
hardens
Answer
Igneous Rock
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Igneous rock that is rich in
feldspars and silica and
generally light in color
Answer
Felsic Rock
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What can change the
angularity of sediment?
Answer
How far the rock has been
carried, the agent that
carried it
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The pattern that illustrates
the order in which
minerals crystallize from
cooling magma
Answer
Bowen’s reaction series
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Igneous rock that is rich
in Mg and Fe is generally
dark in color
Answer
Mafic
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Sedimentary rock that is made
up of rock fragments that
become compacted or
cemented together
Answer
Clastic Rock
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Layers and bed of
sedimentary rock are
examples of ________
Answer
Stratification
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The crystallization and
removal of different
minerals from cooling
magma
Answer
Fractional
Crystallization
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Lumps that have
compositions different
from the main body of
rock
Answer
Concretions
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Forms when minerals
precipitate from a
solution or settle from a
suspension
Answer
.
Chemical
sedimentary Rock
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Rocks that forms
when existing rock is
altered by forces of
heat, pressure or
chemical processes
Answer
Metamorphic
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Changes in temperature
and pressure over a
large area
Answer
Regional
metamorphism
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This texture results when
extreme pressure causes
minerals in Metamorphic
rock to realign, or when
minerals separate out into
dark and light bands
Answer
Foliated
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What does the strength of a
rock depend upon?
Answer
The type of
minerals that
make up the rock
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How do most sedimentary
rocks form?
Answer
Compaction and
Cementation
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Rocks from magma that
cools deep inside Earth’s
crust
Answer
Intrusive igneous
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Rock formed from the
cooling and solidification
of lava at Earth’s surface
Answer
Extrusive Igneous
Rock
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Formations that
spread over 100 km
squared
Answer
Batholiths
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Process in which
minerals precipitate
into pore spaces
between sediment
grains and bind
sediments together
Answer
Cementation
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Rocks change from one type to another
as a result of geologic forces and
processes that are part of the ______
Answer
The Rock Cycle
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A type of rock with vesicular
texture has what in it?
Answer
Air bubbles from dissolved
gases
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Texture with a mixture of
large and small crystals
Answer
Porphyritic
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Forms from the remains of
plants and animals
Answer
Organic Sedimentary
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Granite has large, welldeveloped crystals giving it
what kind of texture?
Answer
Coarse-grained texture
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When magma forms by
partial melting, which of the
following mineral pairs melt
first?
Answer
Quartz/ feldspar
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