21-5 Question Preview (ID: 1938)
21-5.
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What is Devil's tower?
a) A volcano
b) Solidified core of a volcano
c) Boundary
d) Largest tectonic plate
What are all rocks composed of?
a) Other rocks
b) Fossils
c) Minerals
d) Crystals
Naturally occurring, nonliving substances that have a composition expressed by a chemical formula is a
a) Rock
b) Fossil
c) Mineral
d) Crystal
These are examples of which type of minerals: feldspar, pyroxene, mica
a) Crystal forming minerals
b) Rock forming minerals
c) Intrusive rock
d) Extrusive rock
Cooling of molten rock forms
a) Metamorphic rock
b) Igneous rock
c) Sedimentary rock
d) conglomerate
What does crystal formation depend on?
a) How hot the rock is
b) How cool the rock
c) How quickly the rock cools
d) How quickly the rock heats up
Which of the following is an extrusive rock?
a) Forms from magma that cools while trapped beneath Earth's surface
b) cools on Earth's surface
c) doesn't cool
d) Forms lava
Which of the following is an intrusive rock?
a) Forms from magma that cools while trapped beneath Earth's surface
b) cools on Earth's surface
c) doesn't cool
d) Forms lava
Which has larger crystals?
a) Intrusive
b) Extrusive
c)
d)
What do the remains of older rocks and organisms form?
a) Metamorphic rock
b) Igneous rock
c) Sedimentary rock
d) Limestone
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