Question 1

Which of these statements about the U.S.supply of strategically important metals is true?

Accepted Answer

A) The United States has ample domestic supplies of strategic minerals. 
B) The United States imports a small amount of some strategic minerals. 
C) The United States imports 100% of many strategic minerals. 
D) The United States has access to abundant supplies of strategic minerals with its open trade partners. 
A) The United States has ample domestic supplies of strategic minerals. 
B) The United States imports a small amount of some strategic minerals. 
C) The United States imports 100% of many strategic minerals. 
D) The United States has access to abundant supplies of strategic minerals with its open trade partners.

Question 2

Nonmetals extracted from metals during smelting are termed ________.

Accepted Answer

A) slag 
B) cull 
C) sludge 
D) spar 
A) slag 
B) cull 
C) sludge 
D) spar

Question 3

The presence of gold in western South America can be attributed to processes associated with ________.

Accepted Answer

A) subduction 
B) secondary enrichment 
C) submarine vents 
D) a hot spot 
A) subduction 
B) secondary enrichment 
C) submarine vents 
D) a hot spot

Question 4

Consult the figure below.Which of these is NOT required for a Mississippi Valley-type (MVT)deposit to form?

Accepted Answer

A) deep groundwater 
B) hot groundwater 
C) sedimentary rocks 
D) native metals 
A) deep groundwater 
B) hot groundwater 
C) sedimentary rocks 
D) native metals

Question 5

In what types of rocks are ore minerals found?

Accepted Answer

A) only in igneous rocks 
B) only in igneous and sedimentary rocks 
C) only in igneous and metamorphic rocks 
D) in igneous,sedimentary,and metamorphic rocks 
A) only in igneous rocks 
B) only in igneous and sedimentary rocks 
C) only in igneous and metamorphic rocks 
D) in igneous,sedimentary,and metamorphic rocks

Question 6

Which of these commonly used metals must be smelted from its ore minerals in the presence of carbon monoxide gas (from the burning of carbon-based charcoal)?

Accepted Answer

A) aluminum 
B) copper 
C) iron 
D) tin 
A) aluminum 
B) copper 
C) iron 
D) tin

Question 7

The first widely used alloy in ancient civilizations was ________.

Accepted Answer

A) bronze 
B) copper 
C) gold 
D) iron 
A) bronze 
B) copper 
C) gold 
D) iron

Question 8

Mineral-rich veins within plutons,deposited by hot groundwater into fractures within rock,characterize ________ deposits.

Accepted Answer

A) hydrothermal 
B) placer 
C) residual mineral 
D) sedimentary 
A) hydrothermal 
B) placer 
C) residual mineral 
D) sedimentary

Question 9

Commercial ore deposits are most likely associated with ________.

Accepted Answer

A) thick basinal sandstones and shales 
B) blueschists 
C) evaporite sequences 
D) igneous rocks 
A) thick basinal sandstones and shales 
B) blueschists 
C) evaporite sequences 
D) igneous rocks

Question 10

Consult the figure below.Although granite contains aluminum atoms,we do not mine granite to produce aluminum because ________.

Accepted Answer

A) granite is too difficult to mine 
B) the concentration of aluminum is too small to be economical 
C) aluminum cannot be separated from the granite 
D) aluminum is found only in isolated veins 
A) granite is too difficult to mine 
B) the concentration of aluminum is too small to be economical 
C) aluminum cannot be separated from the granite 
D) aluminum is found only in isolated veins

Question 11

Waste rock left over after a mine has removed the ore is known as ________.

Accepted Answer

A) tailings 
B) adits 
C) ingots 
D) slag 
A) tailings 
B) adits 
C) ingots 
D) slag

Question 12

Some metals are considered precious metals because of their ________.

Accepted Answer

A) concentration in Earth's crust 
B) durability 
C) price per ounce 
D) malleability 
A) concentration in Earth's crust 
B) durability 
C) price per ounce 
D) malleability

Question 13

The most important ores of iron are iron ________.

Accepted Answer

A) sulfides 
B) oxides 
C) carbonates 
D) phosphates 
A) sulfides 
B) oxides 
C) carbonates 
D) phosphates

Question 14

The smelting of iron ore requires temperatures of ________.

Accepted Answer

A) 22°C to 34°C 
B) 1,250°C to 1,400°C 
C) 250°C to 400°C 
D) 13,250°C to 13,400°C 
A) 22°C to 34°C 
B) 1,250°C to 1,400°C 
C) 250°C to 400°C 
D) 13,250°C to 13,400°C

Question 15

The high electrical conductivity associated with metallic bonds is found in ________.

Accepted Answer

A) all minerals that contain metallic ions in any proportions 
B) minerals that have a sufficient metal content to be considered ores 
C) native metals and pure metals artificially derived from ores 
D) magnetic minerals only 
A) all minerals that contain metallic ions in any proportions 
B) minerals that have a sufficient metal content to be considered ores 
C) native metals and pure metals artificially derived from ores 
D) magnetic minerals only

Question 16

Mississippi Valley-type deposits are secondary enrichments primarily of ________ and ________.

Accepted Answer

A) gold;silver 
B) tin;aluminum 
C) copper;bronze 
D) lead;zinc 
A) gold;silver 
B) tin;aluminum 
C) copper;bronze 
D) lead;zinc

Question 17

Concrete is ________.

Accepted Answer

A) synonymous with the term cement 
B) synonymous with the term Portland cement 
C) a combination of cement,sand,and gravel 
D) powdered rock of any lithology mixed with water and allowed to set overnight 
A) synonymous with the term cement 
B) synonymous with the term Portland cement 
C) a combination of cement,sand,and gravel 
D) powdered rock of any lithology mixed with water and allowed to set overnight

Question 18

Which of the following is an alloy?

Accepted Answer

A) gold 
B) silver 
C) bronze 
D) copper 
A) gold 
B) silver 
C) bronze 
D) copper

Question 19

________ is a nonmetal mineral formed by evaporation.

Accepted Answer

A) Sulfur 
B) Gypsum 
C) Zinc 
D) Marble 
A) Sulfur 
B) Gypsum 
C) Zinc 
D) Marble

Question 20

Which of these commonly used metals sometimes occurs as a native metal?

Accepted Answer

A) aluminum 
B) copper 
C) iron 
D) tin 
A) aluminum 
B) copper 
C) iron 
D) tin

Exam 15: Riches in Rock: Mineral Resources

Which of these statements about the U.S.supply of strategically important metals is true?

Nonmetals extracted from metals during smelting are termed ________.

The presence of gold in western South America can be attributed to processes associated with ________.

Consult the figure below.Which of these is NOT required for a Mississippi Valley-type (MVT)deposit to form?

In what types of rocks are ore minerals found?

Which of these commonly used metals must be smelted from its ore minerals in the presence of carbon monoxide gas (from the burning of carbon-based charcoal)?

The first widely used alloy in ancient civilizations was ________.

Mineral-rich veins within plutons,deposited by hot groundwater into fractures within rock,characterize ________ deposits.

Commercial ore deposits are most likely associated with ________.

Consult the figure below.Although granite contains aluminum atoms,we do not mine granite to produce aluminum because ________.

Waste rock left over after a mine has removed the ore is known as ________.

Some metals are considered precious metals because of their ________.

The most important ores of iron are iron ________.

The smelting of iron ore requires temperatures of ________.

The high electrical conductivity associated with metallic bonds is found in ________.

Mississippi Valley-type deposits are secondary enrichments primarily of ________ and ________.

Concrete is ________.

Which of the following is an alloy?

________ is a nonmetal mineral formed by evaporation.

Which of these commonly used metals sometimes occurs as a native metal?

Cosmology and the Birth of Earth

Journey to the Center of the Earth

Drifting Continents and Spreading Seas

The Way the Earth Works: Plate Tectonics

Patterns in Nature: Minerals

Up From the Inferno: Magma and Igneous Rocks

Pages of Earths Past: Sedimentary Rocks

Metamorphism: a Process of Change

The Wrath of Vulcan: Volcanic Eruptions

A Violent Pulse: Earthquakes

Crags,cracks,and Crumples: Crustal Deformation and Mountain Building

Deep Time: How Old Is Old

A Biography of Earth

Squeezing Power From a Stone: Energy Resources

Unsafe Ground: Landslides and Other Mass Movements

Streams and Floods: the Geology of Running Water

Restless Realm: Oceans and Coasts

A Hidden Reserve: Groundwater

An Envelope of Gas: Earths Atmosphere and Climate

Dry Regions: the Geology of Deserts

Amazing Ice: Glaciers and Ice Ages

Global Change in the Earth System

Introducing Rocks

a Surface Veneer: Sediments and Soils

the Rock Cycle in the Earth System

the Earths Interior, revisited: Seismic Layering, gravity, and the Magnetic Field

Memories of Past Life: Fossils and Evolution

Ever-Changing Landscapes and the Hydrologic Cycle

Filters

Mississippi Valley-type deposits are secondary enrichments primarily of and .