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89 questions
1. Rock sediments that travel down a mountain, sand being blown across the beach, and mud sliding down a hill are all examples of
pressing and cementing
erosion
part of the rock cycle
fossil formation
The remains of living things that died long ago are often found in what type of rock?
igneous rocks
sedimentary rock
metamorphic rock
all rocks
The cooled and hardened magma from volcanoes form what rocks?
igneous
sedimentary
metamorphic
fossils
The property of hardness is being observed when Calcite has a hardness of 3.5 and Shale has a hardness of 6.2. According to the Moh's Scales of Hardness, which rock can scratch a rock that has a hardness of 5.4?
Calcite
Shale
neither rock
both rocks
Hot, molten rock inside the earth is called ...
lava
magma
igneous rock
minerals
Once magma reaches the earth's surface, it is called __________.
a vent
minerals
igneous rocks
lava
Rocks that are buried deep in the earth can be changed into an entirely new rock when it goes through what?
weathering and erosion
pressing and cementing
heat and pressure
cooling and hardening
A person who studies the properties of rocks to tell how the rocks may have been formed are ____________.
mineralists
geologists
rock stars
rockologists
This rock cooled on the outside of a volcano and contained gas pockets when it was forming. What type of rock is this?
Sedimentary
Igneous
Metamorphic
Which igneous rock is dark colored, cooled rapidly on Earth's surface, and is composed mainly of plagioclase feldspar, olivine, and pyroxene?
obsidian
rhyolite
gabbro
scoria
The igneous rock is mostly composed of potassium feldpsar and quartz crystals that have an average grain size of 3 millimeters. The igneous rock is most likely
granite
pegmatite
gabbro
pumice
What is the origin and rate of formation of this rock?
plutonic with slow cooling
plutonic with rapid cooling
volcanic with slow cooling
volcanic with rapid cooling
Which igneous rock has a vesicular texture and
contains the minerals potassium feldspar and quartz?
Andesite
pegmatite
pumice
scoria
Which intrusive igneous rock could be composed of
approximately 60% pyroxene, 25% plagioclase
feldspar, 10% olivine, and 5% amphibole?
granite
rhyolite
gabbro
basalt
Biotite mica and muscovite mica have different
chemical compositions. Compared to the magma
from which biotite mica forms, the magma from
which muscovite mica forms is usually
more mafic and less dense
more mafic and more dense
more felsic and less dense
more felsic and more dense
Which geologic process convert shale to gneiss?
sedimentary layering
intrusion of magma
metamorphism
weathering
Which rock was subjected to intense heat and
pressure but did not solidify from magma?
sandstone
schist
gabbro
rhyolite
The photograph below shows the texture of a rock
composed of various minerals as seen through a
microscope. Which rock is most likely shown?
Sandstone
Anthracite Coal
Dunite
Schist
The cross section below represents a portion of Earth's crust. Letters A through D are locations within
the rock units. Which location is quartzite most likely found?
A
B
C
D
Which rock is only formed by regional
metamorphism?
Slate
Hornfels
Dunite
Marble
Wavy bands of light and dark minerals visible in
gneiss bedrock probably formed from the
cementing together of individual mineral grains
cooling and crystallization of magma
evaporation of an ancient ocean
heat and pressure during metamorphism
Which two kinds of adjoining bedrock would most
likely have a zone of contact metamorphism
between them?
Shale and conglomerate
shale and sandstone
limestone and sandstone
limestone and granite
Which sample best shows the physical properties
normally associated with regional metamorphism?
A
B
C
D
Which physical characteristic best describes the rock
phyllite?
glassy texture with gas pockets
clastic texture with angular fragments
bioclastic texture with cemented shell
fragments
foliated texture with microscopic mica
crystals
During the Permian Period, sedimentary bedrock in
the Appalachian Region was subjected to high
temperature and pressure. Calcite deposits that had
existed in this environment would most likely have
formed
Schist
Gabbro
Marble
Gneiss
How do the metamorphic rocks schist and quartzite
differ?
Quartzite contains the mineral quartz and schist
does not.
Quartzite forms from regional metamorphism
and schist does not.
Schist is organically formed and quartzite is
not.
Schist is foliated and quartzite is not.
In the simple rock-cycle diagram, which processes would change the schist directly into a pile of sediments ?
uplift, weathering, and erosion of the schist
cementing of sediment grains followed by compaction
melting of the schist followed by cooling
heat and/or pressure applied to the schist
Rocks are classified as igneous, sedimentary, or
metamorphic based primarily on their
Texture
Crystal or grain size
method of formation
mineral composition
A rock would be classified as metamorphic
because it shows
Distorted Banding
Organic Composition of Shells
Mixture of Minerals
Crystals from precipitation
If a metamorphic rock bubbles when a drop of acid
is placed on its surface, the rock is most likely
Schist
Slate
Marble
Quartzite
What is the rock name used to
represent the sedimentary rock that has a grain size of
0.006 to 0.2 centimeters?
Siltstone
Shale
Sandstone
Conglomerate
Which mineral precipitates from oceans and forms
rock salt?
Quartz
Fluorite
Halite
Olivine
Most rocks that form from fragmental rock particles
are classified as
Extrusive Igneous
Intrusive Igneous
Clastic Sedimentary
Chemical Sedimentary
Most sandstone bedrock is composed of sediment
that was
Sorted by size and not layered
Sorted by size and layered
unsorted and not layered
unsorted and layered
The diagram shows a test for which mineral property?
Hardness
Luster
Cleavage
Streak
All of the following are characteristics of metamorphic rocks except —
flattened crystals
regional
bending from pressure
holes from trapped gases
Which of the following minerals found in Virginia is known as “fool’s gold”?
pyrite
hematite
galena
limonite
Which conclusion can be made based on the information in the chart?
Quartz is harder than topaz.
Calcite is harder than apatite
Fluorite is harder than feldspar.
Gypsum is harder than talc.
More often than metamorphic or igneous rocks, sedimentary rocks have —
many holes from trapped gases
large quartz crystals
numerous fossils
a glassy appearance
Which of these can determine the size of grains in igneous rocks?
amount of rare minerals
distance from a plate boundary
size of the volcano
cooling rate of molten rock
What property is shared by many gemstones, such as diamonds, rubies, sapphires, emeralds, and topaz?
extreme hardness
high specific gravity
carbon as the primary element
ductility
The density of a mineral is determined by its mass and —
hardness
luster
volume
shape
Slate is a fairly common rock that can be used for roofing shingles. What property makes it most suitable for this use?
it can be split into thin, flat layers.
it feels soft and smooth.
it is hard and brittle.
it can occur in different colors.
The mineral in the above table that will scratch garnet is —
pyrite
garnet
magnetite
topaz
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