Earth Science Review 4 (2): Question Preview (ID: 11457)

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Which of the following is not a characteristic that geologists use to identify rocks?
a) texture b) mineral composition c) color d) size
In ___________ rocks grains occur randomly throughout the rock
a) nonbanded b) banded c) patterned d) nonpatterned
Igneous rocks with a _________ silica content form light colored rocks
a) high b) low c) medium d) zero
A fine grained igneous rock probably formed
a) extrusively b) intrusively c) coarsely d) finely
________ rocks with _________ edges make up conglomerate
a) clastic; rounded b) clastic; jagged c) chemical; rounded d) chemical; jagged
_____________ sedimentary rock forms when dissolved minerals crystallize on top of a rock
a) chemical b) organic c) clastic d) crystal
Foliated ____________ rocks have grains arranged _______________
a) metamorphic; in parallel layers b) metamorphic; randomly c) sedimentary; in parallel layers d) sedimentary; randomly
Which rock has a jagged grain shape?
a) conglomerate b) breccia c) igneous d) metamorphic
Sedimentary rocks that contain fossils are called
a) organic b) chemical c) clastic d) crystal
Intrusive igneous rocks
a) formed by cooling rapidly b) formed by cooling slowly c) have fine grains d) 2 of the choices
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