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Classifying Rocks
Test Description: Practice Quiz on Classifying Rocks
Instructions: Answer all questions to get your test result.
1) Igneous rock that cools very quickly when it forms may have a texture that is
A
coarse grained
B
multicolored and banded
C
made up of jagged grains
D
smooth and shiny with no visible grains.
2) When all the grains in a rock are large and easy to see, the rock is described as
A
extrusive
B
coarse grained
C
fine grained
D
nonbanded
3) To describe a rock's texture, geologists determine
A
the color and density of a rock.
B
how the rock formed.
C
how many minerals the rock contains.
D
the size, shape, and pattern of the rock's grains.
4) Generally, a rock is made up of
A
a compound of several elements.
B
large crystals.
C
a mixture of minerals and other materials.
D
small crystals.
5) The texture of slate is said to be ______ because it mineral particles can be seen only with a microscope.
A
banded
B
fine grained
C
coarse grained
D
jagged
6) Particles of minerals or other rocks are called
A
jagged
B
crystals
C
grains
D
feldspar
7) _______________ tells the minerals that make up a rock.
A
Grain size
B
Grain pattern
C
Composition
D
Texture
8) A rock formed deep underground by heat and pressure or chemical reactions is called a(n) _______ rocks
A
coarse grained
B
igneous
C
metamorphic
D
sedimentary
9) A type of rock formed by the cooling of magma or lava is called a(n) _______ rock.
A
sedimentary
B
igneous
C
metamorphic
D
banded
10) A type of rock that is formed in layers by the weathering or erosion of rock is called a(n) ___________ rock.
A
fine grained
B
metamorphic
C
sedimentary
D
igneous
*select an answer for all questions
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