Question 1

The San Andreas fault

Accepted Answer

A)  is a divergent plate boundary. 
B)  is a transform plate boundary. 
C)  is a subduction zone. 
D)  is part of the Cascadia subduction zone. 
E)  is in Alaska. 
A)  is a divergent plate boundary. 
B)  is a transform plate boundary. 
C)  is a subduction zone. 
D)  is part of the Cascadia subduction zone. 
E)  is in Alaska.

Question 2

Earthquake intensity describes the effects of shaking on people and structures.

Accepted Answer

A) True 
 B)False

Question 3

The term "major" as a descriptor would be applied to earthquakes with a magnitude of

Accepted Answer

A)  9 or higher. 
B)  8 and higher. 
C)  8 t.8.9. 
D)  6 to 6.9. 
E)  7 to 7.9. 
A)  9 or higher. 
B)  8 and higher. 
C)  8 t.8.9. 
D)  6 to 6.9. 
E)  7 to 7.9.

Question 4

The ground motion from a magnitude 6 earthquake is approximately

Accepted Answer

A)  twice as much as ground motion from a magnitude 5 earthquake. 
B)  10 times as much as ground motion from a magnitude 5 earthquake. 
C)  20 times as much as ground motion from a magnitude 5 earthquake. 
D)  30 times as much as ground motion from a magnitude 5 earthquake. 
E)  100 times as much as ground motion from a magnitude 5 earthquake. 
A)  twice as much as ground motion from a magnitude 5 earthquake. 
B)  10 times as much as ground motion from a magnitude 5 earthquake. 
C)  20 times as much as ground motion from a magnitude 5 earthquake. 
D)  30 times as much as ground motion from a magnitude 5 earthquake. 
E)  100 times as much as ground motion from a magnitude 5 earthquake.

Question 5

In the 1989 Loma Prieta earthquake,buildings in the Marina district experienced significant damage because they were built on landfill debris from the 1906 earthquake.

Accepted Answer

A) True 
 B)False

Question 6

Precursors,such as foreshocks,always precede large earthquakes.

Accepted Answer

A) True 
 B)False

Question 7

Faults are classified as inactive if they have not moved in the past ________ years.

Accepted Answer

A)  10,000 
B)  1 million 
C)  1,600 
D)  11,600 
E)  2.6 million 
A)  10,000 
B)  1 million 
C)  1,600 
D)  11,600 
E)  2.6 million

Question 8

The Queen Charlotte fault off the coast of Vancouver Island is a normal fault.

Accepted Answer

A) True 
 B)False

Question 9

The Richter scale is the most common earthquake magnitude scale used by seismologists.

Accepted Answer

A) True 
 B)False

Question 10

In order to be useful,what would an earthquake prediction have to include?

Accepted Answer

Time of the earthquake,to with

Question 11

List advantages and disadvantages of microzonation with regard to earthquake hazards.

Accepted Answer

Shaking hazards can vary within small ar

Question 12

Explain how seismic gaps can help in forecasting large earthquakes.

Accepted Answer

Seismic gaps are segments of faults that

Question 13

What geologic evidence for past earthquakes could you observe in salt marshes on the coast of Washington State?

Accepted Answer

A)  measurable offsets along strike-slip faults 
B)  alternating layers of tidal mud and tidal marsh deposits 
C)  earthquake-triggered landslides from steep dunes 
D)  uplifted rocky terraces 
E)  the remains of destroyed cities 
A)  measurable offsets along strike-slip faults 
B)  alternating layers of tidal mud and tidal marsh deposits 
C)  earthquake-triggered landslides from steep dunes 
D)  uplifted rocky terraces 
E)  the remains of destroyed cities

Question 14

At any given seismograph station

Accepted Answer

A)  the S waves arrive before the P waves. 
B)  the surface waves arrive first. 
C)  the P waves arrive first. 
D)  the P waves are always largest. 
E)  distance to earthquake is determined using the size of the P waves. 
A)  the S waves arrive before the P waves. 
B)  the surface waves arrive first. 
C)  the P waves arrive first. 
D)  the P waves are always largest. 
E)  distance to earthquake is determined using the size of the P waves.

Question 15

The Modified Mercalli Intensity scale

Accepted Answer

A)  is a measure of the total damage done by an earthquake. 
B)  is a measure of how people and property are affected by an earthquake. 
C)  is a measure of the amount of energy released. 
D)  is an open ended (no limit) scale. 
E)  is used to determine earthquake magnitude. 
A)  is a measure of the total damage done by an earthquake. 
B)  is a measure of how people and property are affected by an earthquake. 
C)  is a measure of the amount of energy released. 
D)  is an open ended (no limit) scale. 
E)  is used to determine earthquake magnitude.

Question 16

S-waves,also called shear or secondary waves,are the faster of the two types of body waves.

Accepted Answer

A) True 
 B)False

Question 17

In the 1985 Mexico earthquake buildings with 10-20 storeys literally tore themselves apart because

Accepted Answer

A)  they were badly constructed. 
B)  they were not finished. 
C)  the rocks beneath them were hard. 
D)  they had the same natural frequency as the materials on which they were built. 
E)  the earthquake occurred right under the city. 
A)  they were badly constructed. 
B)  they were not finished. 
C)  the rocks beneath them were hard. 
D)  they had the same natural frequency as the materials on which they were built. 
E)  the earthquake occurred right under the city.

Question 18

Which of the following is the correct sequence for the four stages of an earthquake cycle?

Accepted Answer

A)  inactivity, accumulated strain, mainshock, aftershocks 
B)  accumulated strain, foreshock, inactivity, mainshock 
C)  inactivity, accumulated strain, foreshock, mainshock 
D)  accumulated strain, mainshock, aftershocks, energy dispersion 
E)  inactivity, accumulated strain, mainshock, energy dispersion 
A)  inactivity, accumulated strain, mainshock, aftershocks 
B)  accumulated strain, foreshock, inactivity, mainshock 
C)  inactivity, accumulated strain, foreshock, mainshock 
D)  accumulated strain, mainshock, aftershocks, energy dispersion 
E)  inactivity, accumulated strain, mainshock, energy dispersion

Question 19

Compressional seismic waves are

Accepted Answer

A)  surface waves. 
B)  Love waves. 
C)  S waves. 
D)  P waves. 
E)  Rayleigh waves. 
A)  surface waves. 
B)  Love waves. 
C)  S waves. 
D)  P waves. 
E)  Rayleigh waves.

Question 20

Compare the motion that occurs within rocks when P waves pass through versus when S waves pass through.

Accepted Answer

As a P wave passes,the rocks undergo com

The San Andreas fault

Earthquake intensity describes the effects of shaking on people and structures.

The term "major" as a descriptor would be applied to earthquakes with a magnitude of

The ground motion from a magnitude 6 earthquake is approximately

In the 1989 Loma Prieta earthquake,buildings in the Marina district experienced significant damage because they were built on landfill debris from the 1906 earthquake.

Precursors,such as foreshocks,always precede large earthquakes.

Faults are classified as inactive if they have not moved in the past ________ years.

The Queen Charlotte fault off the coast of Vancouver Island is a normal fault.

The Richter scale is the most common earthquake magnitude scale used by seismologists.

In order to be useful,what would an earthquake prediction have to include?

List advantages and disadvantages of microzonation with regard to earthquake hazards.

Explain how seismic gaps can help in forecasting large earthquakes.

What geologic evidence for past earthquakes could you observe in salt marshes on the coast of Washington State?

At any given seismograph station

The Modified Mercalli Intensity scale

S-waves,also called shear or secondary waves,are the faster of the two types of body waves.

In the 1985 Mexico earthquake buildings with 10-20 storeys literally tore themselves apart because

Which of the following is the correct sequence for the four stages of an earthquake cycle?

Compressional seismic waves are

Compare the motion that occurs within rocks when P waves pass through versus when S waves pass through.

Introduction to Natural Hazards

Internal Structure of Earth and Plate Tectonics

Tsunamis

Volcanoes and Volcanic Eruptions

Landslides

Snow Avalanches

Subsidence and Soil Expansion and Contraction

River Flooding

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Waves, Currents, and Coastlines

Wildfires

Climate Change

Meteorite Impacts and Extinctions

Filters

Exam 3: Earthquakes

The San Andreas fault

Earthquake intensity describes the effects of shaking on people and structures.

The term "major" as a descriptor would be applied to earthquakes with a magnitude of

The ground motion from a magnitude 6 earthquake is approximately

In the 1989 Loma Prieta earthquake,buildings in the Marina district experienced significant damage because they were built on landfill debris from the 1906 earthquake.

Precursors,such as foreshocks,always precede large earthquakes.

Faults are classified as inactive if they have not moved in the past ________ years.

The Queen Charlotte fault off the coast of Vancouver Island is a normal fault.

The Richter scale is the most common earthquake magnitude scale used by seismologists.

In order to be useful,what would an earthquake prediction have to include?

List advantages and disadvantages of microzonation with regard to earthquake hazards.

Explain how seismic gaps can help in forecasting large earthquakes.

What geologic evidence for past earthquakes could you observe in salt marshes on the coast of Washington State?

At any given seismograph station

The Modified Mercalli Intensity scale

S-waves,also called shear or secondary waves,are the faster of the two types of body waves.

In the 1985 Mexico earthquake buildings with 10-20 storeys literally tore themselves apart because

Which of the following is the correct sequence for the four stages of an earthquake cycle?

Compressional seismic waves are

Compare the motion that occurs within rocks when P waves pass through versus when S waves pass through.

Introduction to Natural Hazards

Internal Structure of Earth and Plate Tectonics

Tsunamis

Volcanoes and Volcanic Eruptions

Landslides

Snow Avalanches

Subsidence and Soil Expansion and Contraction

River Flooding

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Waves, Currents, and Coastlines

Wildfires

Climate Change

Meteorite Impacts and Extinctions

Filters