Question 1

Which one of the following is true regarding tsunamis?

Accepted Answer

A) They travel as deep-water waves at speeds greater than the speed of sound in water so they hit the coast followed by a massive rumble like a sonic boom. 
B) Their wave heights decrease and wavelengths increase as they move into shallower water. 
C) They are started by fault-induced, horizontal shifts in the sea floor that suddenly propel great masses of water upwards like spreading ripples in all directions. 
D) They occur in the open ocean like fast surface waves travelling at hundreds of kilometres per hour, wavelengths are hundreds of kilometres, and wave heights < a metre. 
A) They travel as deep-water waves at speeds greater than the speed of sound in water so they hit the coast followed by a massive rumble like a sonic boom. 
B) Their wave heights decrease and wavelengths increase as they move into shallower water. 
C) They are started by fault-induced, horizontal shifts in the sea floor that suddenly propel great masses of water upwards like spreading ripples in all directions. 
D) They occur in the open ocean like fast surface waves travelling at hundreds of kilometres per hour, wavelengths are hundreds of kilometres, and wave heights < a metre.

Question 2

What does an S-wave do to the rock it passes through?

Accepted Answer

A) It lifts it up and down in a wavelike motion (perpendicular to the advancing wave front), distorting the rock's shape while holding its volume (and density)constant. 
B) It alternately compresses and expands the rock (like the bellows of an accordion)along the direction of the advancing wave. 
C) It causes the rock to wiggle from side to side as the wave advances. 
D) It causes the rock to move in little vertical circles as the wave advances. 
A) It lifts it up and down in a wavelike motion (perpendicular to the advancing wave front), distorting the rock's shape while holding its volume (and density)constant. 
B) It alternately compresses and expands the rock (like the bellows of an accordion)along the direction of the advancing wave. 
C) It causes the rock to wiggle from side to side as the wave advances. 
D) It causes the rock to move in little vertical circles as the wave advances.

Question 3

________ is the name of the earthquake-magnitude scale based on the amount of seismic energy released during the event.

Accepted Answer

The answer of ________ is the name of the earthquake-magnitude...

Question 4

When seismic waves pass from one material (layer)to another, the path of the wave is ________, according to the changes in elastic properties like compressibility, rigidity, and density.

Accepted Answer

The answer of When seismic waves pass from one material...

Question 5

As P waves pass from the mantle into the outer core, velocities drop abruptly.

Accepted Answer

A) True 
 B)False

Question 6

A shallow-focus, large earthquake occurs directly under the South Pole.A seismic station at the North Pole would receive ________.

Accepted Answer

A) S waves from this quake but not P waves 
B) both P waves and S waves from this quake separated in arrival times by two minutes 
C) neither P waves nor S waves from the quake 
D) P waves from this quake but no S waves would be detected 
A) S waves from this quake but not P waves 
B) both P waves and S waves from this quake separated in arrival times by two minutes 
C) neither P waves nor S waves from the quake 
D) P waves from this quake but no S waves would be detected

Question 7

Name two drawbacks of having to rely on "felt" intensity scales to estimate an earthquake's size.

Accepted Answer

Destruction depends on: popula

Question 8

1)How do we observe the Earth's interior and 2)how do we interpret what materials this represents?

Accepted Answer

1)By using major earthquake paths and ar

Question 9

Reid's elastic rebound theory of earthquake generation was based on his studies following the 1906 San Francisco earthquake.

Accepted Answer

A) True 
 B)False

Question 10

A tsunami with an amplitude of 1 m would probably not be noticed passing a ship at sea because of its low amplitude and very long wavelength.

Accepted Answer

A) True 
 B)False

Question 11

Following a major earthquake, aftershocks diminish in magnitude but may still be powerful enough to destroy or further damage weakened buildings.

Accepted Answer

A) True 
 B)False

Question 12

What is the average P-wave velocity (km/sec)if the seismic station is 2000 km from the epicentre?

Accepted Answer

A) 8.33 
B) 500 
C) 200 
D) 4.66 
A) 8.33 
B) 500 
C) 200 
D) 4.66

Question 13

As a P wave passes, material particles vibrate at right angles to the path followed by a point moving with the wave.

Accepted Answer

A) True 
 B)False

Question 14

A ________ is one or more smaller earthquakes that sometimes precede a much larger, main earthquake event.

Accepted Answer

The answer of A ________ is one or more smaller...

Question 15

Name two pieces of evidence for a devastating "Megathrust" earthquake on the Cascadia Subduction zone in January 1700.

Accepted Answer

Oral traditional stories from West Coast

Question 16

Name two other zones of seismicity in Canada, excluding the west coast.

Accepted Answer

Southern Rockies in

Question 17

The Mercalli Scale is a scale from ________.

Accepted Answer

A) 1 to 12 that rates the energy required for faulting to occur 
B) 1 to 10 that rates the energy released by an earthquake 
C) I to XII that rates the structural damage due to an earthquake 
D) I to X that rates the total energy released during the main quake and all aftershocks 
A) 1 to 12 that rates the energy required for faulting to occur 
B) 1 to 10 that rates the energy released by an earthquake 
C) I to XII that rates the structural damage due to an earthquake 
D) I to X that rates the total energy released during the main quake and all aftershocks

Question 18

When, and on what fault, was Canada's greatest earthquake, for which we have a seismic record?

Accepted Answer

A) magnitude 9.0, January 26, 1700, Cascadia Subduction Zone 
B) magnitude 5.9, November 25, 1988, Grenville Fault 
C) magnitude 7.6, February 28, 2001, Cascadia Subduction Zone 
D) magnitude 8.1, August 22, 1949, Queen Charlotte Fault 
A) magnitude 9.0, January 26, 1700, Cascadia Subduction Zone 
B) magnitude 5.9, November 25, 1988, Grenville Fault 
C) magnitude 7.6, February 28, 2001, Cascadia Subduction Zone 
D) magnitude 8.1, August 22, 1949, Queen Charlotte Fault

Question 19

Which of the following best characterizes how the diameter of Earth's core and the nature of the outer core were discovered?

Accepted Answer

A) Crystalline iron was found in lavas erupted from the deepest known hot spots. 
B) by analysis of the P-wave and S-wave shadow zones 
C) because P-wave speeds are higher in the outer core than in the lower mantle 
D) by using the ratio of iron meteorites to stony meteorites to deduce the relative diameters of the core and mantle 
A) Crystalline iron was found in lavas erupted from the deepest known hot spots. 
B) by analysis of the P-wave and S-wave shadow zones 
C) because P-wave speeds are higher in the outer core than in the lower mantle 
D) by using the ratio of iron meteorites to stony meteorites to deduce the relative diameters of the core and mantle

Question 20

The fact that ________ is good evidence for a solid inner core.

Accepted Answer

A) P waves are faster in the inner core than in the outer core 
B) S waves do not pass directly through the core 
C) S waves are slower in the inner core than in the outer core 
D) S waves are focused at the centre of the P-wave shadow zone 
A) P waves are faster in the inner core than in the outer core 
B) S waves do not pass directly through the core 
C) S waves are slower in the inner core than in the outer core 
D) S waves are focused at the centre of the P-wave shadow zone

Which one of the following is true regarding tsunamis?

What does an S-wave do to the rock it passes through?

________ is the name of the earthquake-magnitude scale based on the amount of seismic energy released during the event.

When seismic waves pass from one material (layer)to another, the path of the wave is ________, according to the changes in elastic properties like compressibility, rigidity, and density.

As P waves pass from the mantle into the outer core, velocities drop abruptly.

A shallow-focus, large earthquake occurs directly under the South Pole.A seismic station at the North Pole would receive ________.

Name two drawbacks of having to rely on "felt" intensity scales to estimate an earthquake's size.

1)How do we observe the Earth's interior and 2)how do we interpret what materials this represents?

Reid's elastic rebound theory of earthquake generation was based on his studies following the 1906 San Francisco earthquake.

A tsunami with an amplitude of 1 m would probably not be noticed passing a ship at sea because of its low amplitude and very long wavelength.

Following a major earthquake, aftershocks diminish in magnitude but may still be powerful enough to destroy or further damage weakened buildings.

What is the average P-wave velocity (km/sec)if the seismic station is 2000 km from the epicentre?

As a P wave passes, material particles vibrate at right angles to the path followed by a point moving with the wave.

A ________ is one or more smaller earthquakes that sometimes precede a much larger, main earthquake event.

Name two pieces of evidence for a devastating "Megathrust" earthquake on the Cascadia Subduction zone in January 1700.

Name two other zones of seismicity in Canada, excluding the west coast.

The Mercalli Scale is a scale from ________.

When, and on what fault, was Canada's greatest earthquake, for which we have a seismic record?

Which of the following best characterizes how the diameter of Earth's core and the nature of the outer core were discovered?

The fact that ________ is good evidence for a solid inner core.

An Introduction to Geology and Plate Tectonics

Minerals: The Building Blocks of Rocks

Igneous Rocks

Volcanoes and Volcanic Processes

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

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 10: Earthquakes and Earth's Interior

Which one of the following is true regarding tsunamis?

What does an S-wave do to the rock it passes through?

________ is the name of the earthquake-magnitude scale based on the amount of seismic energy released during the event.

When seismic waves pass from one material (layer)to another, the path of the wave is ________, according to the changes in elastic properties like compressibility, rigidity, and density.

As P waves pass from the mantle into the outer core, velocities drop abruptly.

A shallow-focus, large earthquake occurs directly under the South Pole.A seismic station at the North Pole would receive ________.

Name two drawbacks of having to rely on "felt" intensity scales to estimate an earthquake's size.

1)How do we observe the Earth's interior and 2)how do we interpret what materials this represents?

Reid's elastic rebound theory of earthquake generation was based on his studies following the 1906 San Francisco earthquake.

A tsunami with an amplitude of 1 m would probably not be noticed passing a ship at sea because of its low amplitude and very long wavelength.

Following a major earthquake, aftershocks diminish in magnitude but may still be powerful enough to destroy or further damage weakened buildings.

What is the average P-wave velocity (km/sec)if the seismic station is 2000 km from the epicentre?

As a P wave passes, material particles vibrate at right angles to the path followed by a point moving with the wave.

A ________ is one or more smaller earthquakes that sometimes precede a much larger, main earthquake event.

Name two pieces of evidence for a devastating "Megathrust" earthquake on the Cascadia Subduction zone in January 1700.

Name two other zones of seismicity in Canada, excluding the west coast.

The Mercalli Scale is a scale from ________.

When, and on what fault, was Canada's greatest earthquake, for which we have a seismic record?

Which of the following best characterizes how the diameter of Earth's core and the nature of the outer core were discovered?

The fact that ________ is good evidence for a solid inner core.

An Introduction to Geology and Plate Tectonics

Minerals: The Building Blocks of Rocks

Igneous Rocks

Volcanoes and Volcanic Processes

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

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