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1
T or F - Metamorphic
rocks are formed deep in the
crust.
2
True
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Type of rock formed by
particles being pressed and cemented together.
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sedimentary
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Geologist classify a rock according
to its ...
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origin
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Rocks without crystal grains
cooled very .....
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quickly
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Name the sedimentary rock made from sand.
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sandstone
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Particles of minerals and
other rocks that make up a rock. They may be fine or coarse.
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grains
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The Earth's crust is made of ...
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rock
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T or F - Most rocks cannot be
identified by color alone.
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True
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Formed when other rocks are
changed by heat and pressure.
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metamorphic rock
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Forms outside the Earth’s crust.
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Extrusive rock
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Type of rock that forms from the cooling of lava and magma.
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igneous rock
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Geologists classify rocks
into how many groups?
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3
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If a rock is coarse-grained, what size are its
grains?
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large
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About 20 minerals make up most rocks. What are these minerals known
as?
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Rock-forming minerals
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Which do geologists NOT observe when
studying a rock sample?
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streak
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Type of rock that forms inside the
Earth’s crust.
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intrusive
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What organic matter might a
sedimentary rock contain?
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Plant and animal parts.
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What is it called when sediments are pressed and
squeezed together?
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compaction
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What is it called when sediments are cemented or glued together?
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cementation
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Wind is one way sediments are
moved. Name 2 more ways.
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running waterice
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Shale has very fine grains. It is
formed from _____.
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clay
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Used for building because it is easy to cut.
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sandstonelimestone
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Mechanical weathering is one way rocks
are broken. Name another.
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chemical weathering
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What is the 3rd type of
sedimentary rocks?
1.Organic2. Clastic3.________
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chemical