Question 1

Which of the following iscorrectregarding Earth's inner core?

Accepted Answer

A) it has a density of 13.5 grams per cm³. 
B) it is molten iron in composition. 
C) it is the source of Earth's magnetic field. 
D) it is about 2230 km thick. 
E) it is made up of liquid water. 
A) it has a density of 13.5 grams per cm³. 
B) it is molten iron in composition. 
C) it is the source of Earth's magnetic field. 
D) it is about 2230 km thick. 
E) it is made up of liquid water.

Question 2

Uniformitarianism holds that all geologic change affecting Earth's surface requires immense amounts of time to occur.

Accepted Answer

A) True 
 B)False

Question 3

Convergent plate boundaries are characteristic of

Accepted Answer

A) sea-floor spreading centers. 
B) collision zones between plates. 
C) lateral motions of plates. 
D) all plate boundaries. 
E) rift valleys. 
A) sea-floor spreading centers. 
B) collision zones between plates. 
C) lateral motions of plates. 
D) all plate boundaries. 
E) rift valleys.

Question 4

Salt is an example of ________ rock.

Accepted Answer

A) sedimentary 
B) extrusive igneous 
C) metamorphic 
D) intrusive igneous 
E) lithified 
A) sedimentary 
B) extrusive igneous 
C) metamorphic 
D) intrusive igneous 
E) lithified

Question 5

The major rocks of Earth's crust are classified into principal types based on

Accepted Answer

A) element composition. 
B) mineral composition. 
C) three specific rock-forming processes. 
D) relative and absolute locations. 
E) density. 
A) element composition. 
B) mineral composition. 
C) three specific rock-forming processes. 
D) relative and absolute locations. 
E) density.

Question 6

The Sierra Nevada mountain range in California is an example of

Accepted Answer

A) an extrusive igneous formation. 
B) a lava flow. 
C) an exposed batholith. 
D) a volcano. 
E) a laccolith 
A) an extrusive igneous formation. 
B) a lava flow. 
C) an exposed batholith. 
D) a volcano. 
E) a laccolith

Question 7

Mafic minerals are ________ minerals.

Accepted Answer

A) dark coloured,high density 
B) dark coloured,low density 
C) light coloured,high density 
D) light coloured,low density 
A) dark coloured,high density 
B) dark coloured,low density 
C) light coloured,high density 
D) light coloured,low density

Question 8

The majority of Earth's crust is composed of ________ rock.

Accepted Answer

A) igneous 
B) metamorphic 
C) sedimentary 
D) carbonate 
E) clastic 
A) igneous 
B) metamorphic 
C) sedimentary 
D) carbonate 
E) clastic

Question 9

Describe the characteristics of Earth's mantle.

Accepted Answer

The Earth's mantle is a layer of the pla

Question 10

Compare and contrast the three types of plate boundaries.

Accepted Answer

There are three main types of plate boun

Question 11

Describe the important aspects of the formation and breakup of Pangaea.

Accepted Answer

The answer of Describe the important aspects of the formation...

Question 12

The layer within Earth that lies directly below the lithosphere,but above the upper mantle,is best described as

Accepted Answer

A) a plastic-like layer that flows in response to heat and pressure. 
B) a granitic material that weighs an average of 2.7 grams per cm³. 
C) the core. 
D) resistant to movement of any type. 
E) brittle. 
A) a plastic-like layer that flows in response to heat and pressure. 
B) a granitic material that weighs an average of 2.7 grams per cm³. 
C) the core. 
D) resistant to movement of any type. 
E) brittle.

Question 13

During a magnetic field reversal,Earth is unprotected from cosmic rays and their harmful effects.

Accepted Answer

A) True 
 B)False

Question 14

Consider a swamp along the calm backwaters of a river flowing through a flat landscape.Given the nature of this environment,which of the following sediments would be least likely to be deposited there?

Accepted Answer

A) gravel 
B) sand 
C) silt 
D) clay 
E) cobbles 
A) gravel 
B) sand 
C) silt 
D) clay 
E) cobbles

Question 15

Describe the rock cycle.

Accepted Answer

The rock cycle is a continuous process t

Question 16

Which layer of the planet forms 80 percent of Earth's total volume,and has an average density of 4.5 grams per $ \mathrm{cm}^{3} $?

Accepted Answer

A) continental crust 
B) oceanic crust 
C) mantle 
D) core 
E) lithosphere 
A) continental crust 
B) oceanic crust 
C) mantle 
D) core 
E) lithosphere

Question 17

Glaciers that once covered the Hudson Bay area melted 8,000 years ago.As a result of this,the bay is gradually rising.In another 10 000 years or so,it will have risen above sea level and become dry.This process can best be considered an example of

Accepted Answer

A) catastrophism. 
B) isostasy. 
C) accretion. 
D) orogenesis. 
E) subduction. 
A) catastrophism. 
B) isostasy. 
C) accretion. 
D) orogenesis. 
E) subduction.

Question 18

Which of the following is true of the aesthenosphere?

Accepted Answer

A) it contains pockets of increased heat. 
B) it cannot flow. 
C) it superimposes the lithospheric plates. 
D) it is brittle and broken into pieces. 
E) it is very thick,extending several thousand kilometres in depth. 
A) it contains pockets of increased heat. 
B) it cannot flow. 
C) it superimposes the lithospheric plates. 
D) it is brittle and broken into pieces. 
E) it is very thick,extending several thousand kilometres in depth.

Question 19

The lithosphere lies above the aesthenosphere.

Accepted Answer

A) True 
 B)False

Question 20

Divergent plate boundaries are characteristic of

Accepted Answer

A) sea-floor spreading centers. 
B) collision zones between plates. 
C) transform plate boundaries. 
D) all plate boundaries. 
E) subduction zones. 
A) sea-floor spreading centers. 
B) collision zones between plates. 
C) transform plate boundaries. 
D) all plate boundaries. 
E) subduction zones.

Exam 11: The Dynamic Planet

Which of the following iscorrectregarding Earth's inner core?

Uniformitarianism holds that all geologic change affecting Earth's surface requires immense amounts of time to occur.

Convergent plate boundaries are characteristic of

Salt is an example of ________ rock.

The major rocks of Earth's crust are classified into principal types based on

The Sierra Nevada mountain range in California is an example of

Mafic minerals are ________ minerals.

The majority of Earth's crust is composed of ________ rock.

Describe the characteristics of Earth's mantle.

Compare and contrast the three types of plate boundaries.

Describe the important aspects of the formation and breakup of Pangaea.

The layer within Earth that lies directly below the lithosphere,but above the upper mantle,is best described as

During a magnetic field reversal,Earth is unprotected from cosmic rays and their harmful effects.

Consider a swamp along the calm backwaters of a river flowing through a flat landscape.Given the nature of this environment,which of the following sediments would be least likely to be deposited there?

Describe the rock cycle.

Which layer of the planet forms 80 percent of Earth's total volume,and has an average density of 4.5 grams per cm3 \mathrm{cm}^{3} cm3 ?

Glaciers that once covered the Hudson Bay area melted 8,000 years ago.As a result of this,the bay is gradually rising.In another 10 000 years or so,it will have risen above sea level and become dry.This process can best be considered an example of

Which of the following is true of the aesthenosphere?

The lithosphere lies above the aesthenosphere.

Divergent plate boundaries are characteristic of

Essentials of Geography

Solar Energy to Earth and the Seasons

Earth's Modern Atmosphere

Atmosphere and Surface Energy Balances

Global Temperatures

Atmospheric and Oceanic Circulations

Water and Atmospheric Moisture

Weather

Water Resources

Climate Systems and Climate Change

Tectonics, Earthquakes, and Volcanism

Weathering, Karst Landscapes, and Mass Movement

River Systems and Landforms

Eolian Processes and Arid Landscapes

The Oceans, Coastal Processes, and Landforms

Glacial and Periglacial Processes and Landforms

The Geography of Soils

Ecosystem Essentials

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Which layer of the planet forms 80 percent of Earth's total volume,and has an average density of 4.5 grams per $\mathrm{cm}^{3}$ ?