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Rock Final #2
Test Description: This is the second set of questions for the final on rocks.
Instructions: Answer all questions to get your test result.
1) The sedimentary rock formed when water deposits tiny particles of clay in very thin, flat layers is called
A
limestone.
B
shale
C
gypsum
D
calcite
2) Chalk formed from sediments made of skeletons of microscopic living things in the ocean must be a(n)
A
organic rock.
B
chemical rock.
C
igneous rock.
D
clastic rock.
3) What forms the structure called a coral reef?
A
deposits of coral rocks
B
particles of clastic rocks
C
skeletons of coral animals
D
cementation of crystals
4) What happens to a coral reef if the sea level rises or if the sea floor sinks?
A
It continues to grow upward.
B
It grows downward.
C
It is not affected.
D
It dies.
5) Over time, coral buried by sediments can turn into
A
atolls.
B
coal.
C
limestone.
D
granite.
6) Because plate movements have raised ancient sea floors above sea level,
A
all remains of ancient coral reefs have been lost.
B
limestone that began as coral reefs can be found on the continents.
C
coral reefs are only found in the deep ocean.
D
there is less coral than there used to be.
7) Heat and pressure deep beneath Earth’s surface can change any rock into
A
sedimentary rock.
B
chemical rock.
C
metamorphic rock.
D
gemstones.
8) The heat that changes a rock into metamorphic rock comes from
A
chemical rocks in the crust.
B
the heat of the mantle.
C
movements in the crust.
D
the sun.
9) Geologists classify metamorphic rock according to
A
the exterior color of the rock.
B
the degree of hardness of the rock.
C
the overall shape of the rock.
D
the arrangement of the grains that make up the rock.
10) The texture of a metamorphic rock that has grains arranged in parallel layers is described as
A
foliated.
B
coarse grained.
C
nonfoliated.
D
jagged grained.
*select an answer for all questions
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