Question 1

Which of the following is correctly matched?

Accepted Answer

A) compression - lengthening or straightening - normal fault 
B) tension - shortening or folding - reverse fault 
C) shearing - lateral twisting - stike-slip fault 
A) compression - lengthening or straightening - normal fault 
B) tension - shortening or folding - reverse fault 
C) shearing - lateral twisting - stike-slip fault

Question 2

Some parts of the San Andreas are currently experiencing a seismic gap,which means that there is very little risk of a major quake in the next few decades.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following is the result of intrusive volcanic activity?

Accepted Answer

A) batholith 
B) lava flow 
C) tephra 
D) volcanic cone 
E) pyroclasts. 
A) batholith 
B) lava flow 
C) tephra 
D) volcanic cone 
E) pyroclasts.

Question 4

Shortening or folding of the crust is produced by strain caused by tension.

Accepted Answer

A) True 
 B)False

Question 5

Pulverized rock and clastic materials ejected violently during an eruption are called

Accepted Answer

A) cinders. 
B) explosive debris. 
C) tephra,or pyroclastics. 
D) volcanic ash. 
E) obsidian 
A) cinders. 
B) explosive debris. 
C) tephra,or pyroclastics. 
D) volcanic ash. 
E) obsidian

Question 6

A topographic region that is characterized by local relief of less than 100 m is considered a

Accepted Answer

A) plain. 
B) high tableland. 
C) hill or low tableland. 
D) depression. 
E) prairie 
A) plain. 
B) high tableland. 
C) hill or low tableland. 
D) depression. 
E) prairie

Question 7

Domes can be formed by

Accepted Answer

A) extinct volcanoes. 
B) upwarping associated with plate collisions. 
C) downwarping associated with plate collisions. 
D) upwarping associated with magma movement (i.e. ,plutonic activity). 
E) subduction. 
A) extinct volcanoes. 
B) upwarping associated with plate collisions. 
C) downwarping associated with plate collisions. 
D) upwarping associated with magma movement (i.e. ,plutonic activity). 
E) subduction.

Question 8

The nucleus of old crystalline rock in each of the principal continental masses is called a

Accepted Answer

A) basalt mass. 
B) continental shield,or craton. 
C) mountain mass. 
D) composite zone. 
E) pliton. 
A) basalt mass. 
B) continental shield,or craton. 
C) mountain mass. 
D) composite zone. 
E) pliton.

Question 9

Geologically speaking,the continents began forming relatively recently.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following statements about shield volcanoes is true?

Accepted Answer

A) they occur in shield areas of Earth. 
B) they are subject to violently explosive eruptions. 
C) they form from mafic magma. 
D) they consist of tremendous quantities of pyroclastics. 
E) they develop when the lava is highly viscous. 
A) they occur in shield areas of Earth. 
B) they are subject to violently explosive eruptions. 
C) they form from mafic magma. 
D) they consist of tremendous quantities of pyroclastics. 
E) they develop when the lava is highly viscous.

Question 11

The wave amplitude associated with a magnitude 8 quake on the moment magnitude scale is how many times greater than that of a magnitude 6 quake?

Accepted Answer

A) 3)15 
B) 31.5 
C) 63 
D) 992.25 
E) 31255 
A) 3)15 
B) 31.5 
C) 63 
D) 992.25 
E) 31255

Question 12

Composite cones have steep slopes and experience ________ eruptions because they are composed of ________ magma.

Accepted Answer

A) mild mafic 
B) mild felsic 
C) violent mafic 
D) violent felsic 
A) mild mafic 
B) mild felsic 
C) violent mafic 
D) violent felsic

Question 13

Effusive eruptions are related to which of the following?

Accepted Answer

A) magma with a 50 percent or lower silica content,rich in iron and magnesium 
B) high-viscosity magma 
C) magma with a 50-75 percent silica content,high in aluminum 
D) the volcanic activity near Mount St.Helens 
E) on the Pacific coast of Canada. 
A) magma with a 50 percent or lower silica content,rich in iron and magnesium 
B) high-viscosity magma 
C) magma with a 50-75 percent silica content,high in aluminum 
D) the volcanic activity near Mount St.Helens 
E) on the Pacific coast of Canada.

Question 14

Land created by in-filling of bays is extremely unstable during an earthquake.

Accepted Answer

A) True 
 B)False

Question 15

California has overridden part of a seafloor spreading zone.

Accepted Answer

A) True 
 B)False

Question 16

Orogenesis refers to

Accepted Answer

A) the beginning of extensive faulting. 
B) a general term for a mountain-building episode that thickens continental crust. 
C) a general thinning of the crust. 
D) the formation of mountains  without faulting,folding,or the capture of migrating terranes. 
E) the deepening of the ocean through subduction in a trench. 
A) the beginning of extensive faulting. 
B) a general term for a mountain-building episode that thickens continental crust. 
C) a general thinning of the crust. 
D) the formation of mountains  without faulting,folding,or the capture of migrating terranes. 
E) the deepening of the ocean through subduction in a trench.

Question 17

Discuss why short term predictions of earthquakes are not yet entirely reliable,while volcanoes are more easily predicted.

Accepted Answer

The answer of Discuss why short term predictions of earthquakes...

Question 18

Explosive eruptions tend to build up

Accepted Answer

A) shield-shaped volcanoes. 
B) plateau basalts. 
C) composite volcanoes. 
D) many subsequent lava flows. 
E) wide,flat platforms in the sea. 
A) shield-shaped volcanoes. 
B) plateau basalts. 
C) composite volcanoes. 
D) many subsequent lava flows. 
E) wide,flat platforms in the sea.

Question 19

The Appalachians are older than the Rockies.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is an example of a third order of relief?

Accepted Answer

A) the Alps 
B) a continental platform 
C) the Ottawa Valley 
D) the Basin and Range Province 
E) the southern ocean 
A) the Alps 
B) a continental platform 
C) the Ottawa Valley 
D) the Basin and Range Province 
E) the southern ocean

Exam 12: Tectonics, Earthquakes, and Volcanism

Which of the following is correctly matched?

Some parts of the San Andreas are currently experiencing a seismic gap,which means that there is very little risk of a major quake in the next few decades.

Which of the following is the result of intrusive volcanic activity?

Shortening or folding of the crust is produced by strain caused by tension.

Pulverized rock and clastic materials ejected violently during an eruption are called

A topographic region that is characterized by local relief of less than 100 m is considered a

Domes can be formed by

The nucleus of old crystalline rock in each of the principal continental masses is called a

Geologically speaking,the continents began forming relatively recently.

Which of the following statements about shield volcanoes is true?

The wave amplitude associated with a magnitude 8 quake on the moment magnitude scale is how many times greater than that of a magnitude 6 quake?

Composite cones have steep slopes and experience ________ eruptions because they are composed of ________ magma.

Effusive eruptions are related to which of the following?

Land created by in-filling of bays is extremely unstable during an earthquake.

California has overridden part of a seafloor spreading zone.

Orogenesis refers to

Discuss why short term predictions of earthquakes are not yet entirely reliable,while volcanoes are more easily predicted.

Explosive eruptions tend to build up

The Appalachians are older than the Rockies.

Which of the following is an example of a third order of relief?

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Composite cones have steep slopes and experience eruptions because they are composed of magma.