Question 1

What igneous rock comprises the active volcanoes of Hawaii and Iceland?

Accepted Answer

The answer of What igneous rock comprises the active volcanoes...

Question 2

Which igneous rock or magma has the lowest silica (SiO?)content?

Accepted Answer

A) granite 
B) basalt 
C) andesite 
D) peridotite 
A) granite 
B) basalt 
C) andesite 
D) peridotite

Question 3

Which of the following has the same mineral composition as andesite?

Accepted Answer

A) basalt 
B) granite 
C) gabbro 
D) diorite 
A) basalt 
B) granite 
C) gabbro 
D) diorite

Question 4

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases.
-Choose the option that does not fit the pattern.

Accepted Answer

A) granite 
B) basalt 
C) diorite 
D) gabbro 
A) granite 
B) basalt 
C) diorite 
D) gabbro

Question 5

What term denotes the predominant and smaller mineral grains in a porphyritic igneous rock?

Accepted Answer

The answer of What term denotes the predominant and smaller...

Question 6

Which of the following igneous rocks is thought to be common in the Earth's mantle but rare in the crust?

Accepted Answer

A) pumice 
B) granite 
C) pegmatite 
D) peridotite 
A) pumice 
B) granite 
C) pegmatite 
D) peridotite

Question 7

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases.
-Choose the option that does not fit the pattern.

Accepted Answer

A) felsic 
B) intermediate 
C) graphic 
D) mafic 
A) felsic 
B) intermediate 
C) graphic 
D) mafic

Question 8

The classification and nomenclature of igneous rocks is based primarily on ________.

Accepted Answer

A) Aristotelian logic 
B) colour and weight 
C) mineral composition and proportions along with textures that give environmental conditions of crystallization 
D) where the rock was found and the local names for this in different languages 
A) Aristotelian logic 
B) colour and weight 
C) mineral composition and proportions along with textures that give environmental conditions of crystallization 
D) where the rock was found and the local names for this in different languages

Question 9

In what texture are mineral grains of roughly equal size and coarse enough to be seen without a microscope or magnifying glass?

Accepted Answer

A) phaneritic 
B) aphanitic 
C) pegmatitic 
D) porphyritic 
A) phaneritic 
B) aphanitic 
C) pegmatitic 
D) porphyritic

Question 10

Silicate igneous rocks make up the ________.

Accepted Answer

A) bulk of volcanic mountains but not much else on Earth 
B) bulk of the Earth's crust and mantle 
C) densest rocks and are mainly found in the core 
D) majority of shallow rocks covering the continents but everything deeper is sedimentary and metamorphic 
A) bulk of volcanic mountains but not much else on Earth 
B) bulk of the Earth's crust and mantle 
C) densest rocks and are mainly found in the core 
D) majority of shallow rocks covering the continents but everything deeper is sedimentary and metamorphic

Question 11

________ are dissolved in melts at depth but they have a tendency to evolve and vaporize at lower (atmospheric)pressure and drive volcanic processes.

Accepted Answer

A) Crystals of quartz and feldspar 
B) Silica, sodium, and potassium 
C) Volatiles 
D) Volcanic lavas 
A) Crystals of quartz and feldspar 
B) Silica, sodium, and potassium 
C) Volatiles 
D) Volcanic lavas

Question 12

The large variety of igneous rock types indicates a large number of different primary magmas exist.

Accepted Answer

A) True 
 B)False

Question 13

Solidification of magma spans a temperature range of at least ________.

Accepted Answer

The answer of Solidification of magma spans a temperature range...

Question 14

As melts cool their viscosity increases (they lose their mobility and get stiffer)even before they start to crystallize because ________.

Accepted Answer

A) all of the sodium and potassium escape 
B) their ions become more disordered 
C) the silica tetrahedra in the melt start to link up and make larger and stronger units 
D) they increase in volume 
A) all of the sodium and potassium escape 
B) their ions become more disordered 
C) the silica tetrahedra in the melt start to link up and make larger and stronger units 
D) they increase in volume

Question 15

Which of the following igneous rock always has a pyroclastic texture?

Accepted Answer

A) rhyolitic tuff 
B) porphyritic basalt flow 
C) intrusive granite pluton 
D) andesitic lava flow 
A) rhyolitic tuff 
B) porphyritic basalt flow 
C) intrusive granite pluton 
D) andesitic lava flow

Question 16

The most common volcanic rock type is rhyolite.

Accepted Answer

A) True 
 B)False

Question 17

What is a very large (> 100 km² ), discordant pluton, commonly of granitic composition?

Accepted Answer

The answer of What is a very large (> 100...

Question 18

________ is a volcanic rock that is extremely vesicular and glassy.

Accepted Answer

A) Obsidian 
B) Pegmatite 
C) Tuff 
D) Pumice 
A) Obsidian 
B) Pegmatite 
C) Tuff 
D) Pumice

Question 19

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases.
-Choose the option that does not fit the pattern.

Accepted Answer

A) subduction 
B) crystal settling 
C) assimilation 
D) magma mixing 
A) subduction 
B) crystal settling 
C) assimilation 
D) magma mixing

Question 20

The molten portion of magmas and lavas is made up of ________.

Accepted Answer

A) complex anion frameworks of oxygen with silicon and aluminum and cation modifiers made up of different amounts of calcium, sodium, iron, magnesium, and potassium 
B) metamorphic fluids 
C) silicate minerals that have already crystallized 
D) solid high pressure forms of water, carbon dioxide, and sulfur dioxide 
A) complex anion frameworks of oxygen with silicon and aluminum and cation modifiers made up of different amounts of calcium, sodium, iron, magnesium, and potassium 
B) metamorphic fluids 
C) silicate minerals that have already crystallized 
D) solid high pressure forms of water, carbon dioxide, and sulfur dioxide

What igneous rock comprises the active volcanoes of Hawaii and Iceland?

Which igneous rock or magma has the lowest silica (SiO?)content?

Which of the following has the same mineral composition as andesite?

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

What term denotes the predominant and smaller mineral grains in a porphyritic igneous rock?

Which of the following igneous rocks is thought to be common in the Earth's mantle but rare in the crust?

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

The classification and nomenclature of igneous rocks is based primarily on ________.

In what texture are mineral grains of roughly equal size and coarse enough to be seen without a microscope or magnifying glass?

Silicate igneous rocks make up the ________.

________ are dissolved in melts at depth but they have a tendency to evolve and vaporize at lower (atmospheric)pressure and drive volcanic processes.

The large variety of igneous rock types indicates a large number of different primary magmas exist.

Solidification of magma spans a temperature range of at least ________.

As melts cool their viscosity increases (they lose their mobility and get stiffer)even before they start to crystallize because ________.

Which of the following igneous rock always has a pyroclastic texture?

The most common volcanic rock type is rhyolite.

What is a very large (> 100 km² ), discordant pluton, commonly of granitic composition?

________ is a volcanic rock that is extremely vesicular and glassy.

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

The molten portion of magmas and lavas is made up of ________.

An Introduction to Geology and Plate Tectonics

Minerals: The Building Blocks of Rocks

Volcanoes and Volcanic Processes

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

Earthquakes and Earth's Interior

The Ocean Floor

Plate Tectonics: The Framework for Modern Geology

Mountain Building and Continental Frameworks

Mass Wasting: The Work of Gravity

Running Water

Groundwater

Glaciers and Glaciation

Deserts and Winds

Shorelines

Mineral and Energy Resources

Filters

Exam 3: Igneous Rocks

What igneous rock comprises the active volcanoes of Hawaii and Iceland?

Which igneous rock or magma has the lowest silica (SiO?)content?

Which of the following has the same mineral composition as andesite?

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

What term denotes the predominant and smaller mineral grains in a porphyritic igneous rock?

Which of the following igneous rocks is thought to be common in the Earth's mantle but rare in the crust?

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

The classification and nomenclature of igneous rocks is based primarily on ________.

In what texture are mineral grains of roughly equal size and coarse enough to be seen without a microscope or magnifying glass?

Silicate igneous rocks make up the ________.

________ are dissolved in melts at depth but they have a tendency to evolve and vaporize at lower (atmospheric)pressure and drive volcanic processes.

The large variety of igneous rock types indicates a large number of different primary magmas exist.

Solidification of magma spans a temperature range of at least ________.

As melts cool their viscosity increases (they lose their mobility and get stiffer)even before they start to crystallize because ________.

Which of the following igneous rock always has a pyroclastic texture?

The most common volcanic rock type is rhyolite.

What is a very large (> 100 km² ), discordant pluton, commonly of granitic composition?

________ is a volcanic rock that is extremely vesicular and glassy.

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

The molten portion of magmas and lavas is made up of ________.

An Introduction to Geology and Plate Tectonics

Minerals: The Building Blocks of Rocks

Volcanoes and Volcanic Processes

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

Earthquakes and Earth's Interior

The Ocean Floor

Plate Tectonics: The Framework for Modern Geology

Mountain Building and Continental Frameworks

Mass Wasting: The Work of Gravity

Running Water

Groundwater

Glaciers and Glaciation

Deserts and Winds

Shorelines

Mineral and Energy Resources

Filters