21-5 Question Preview (ID: 1938)


21-5.

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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