Overview In this assessment you will explore earthquake-related hazards that our community and the greater Los Angeles community are at risk of experiencing, including ground shaking and tsunamis.

Overview In this assessment you will explore earthquake-related hazards that our community and the greater Los Angeles community are at risk of experiencing, including ground shaking and tsunamis. You will complete this assessment by answering the questions in this quiz as described below. Instructions 1. Answer Questions 1 – 10 while reading “USGS: Introduction to the National Seismic Hazard Maps 2. Links to an external site. 3. .” 4. Answer Questions 11 – 20 using the following Earthquake Shaking Potential Maps. 1. Earthquake Shaking Potential for California: Earthquake Shaking Potential for California 2. Download Earthquake Shaking Potential for California 3. 4. Earthquake Shaking Potential for the Los Angeles Metropolitan Region: Earthquake Shaking Potential for the Los Angeles Metropolitan Region 5. Download Earthquake Shaking Potential for the Los Angeles Metropolitan Region 6. 5. Answer Questions 21 – 25 using the following documents.1. California Geological Survey Note 55 – Tsunamis: California Geological Survey: Tsunamis 2. Download California Geological Survey: Tsunamis 3. 4. Tsunami Inundation Map for Emergency Planning, Beverly Hills Quadrangle: Tsunami Inundation Map for Emergency Planning Beverly Hills Quadrangle 5. Download Tsunami Inundation Map for Emergency Planning Beverly Hills Quadrangle 6. 1. A probabilistic map shows possibilities for the future based on: Choose ALL that apply. Group of answer choices – Past history of earthquakes on a given fault – Past history of small earthquakes – How much ground shaking past earthquakes produced – The location and distribution of faults in a given region – How the Earth and rocks respond to ground shaking – How rapidly the Earth is deforming in response to tectonic forces – Where deformation is occurring 2. National Seismic Hazard Maps project potential maximum expected ground motions at a site over a particular period of time, such as 50 years by: Choose ALL that apply. Group of answer choices – Compiling all known earthquake sources – Compiling the distance that an earthquake source is from the site in question – Compiling other seismological and geological information – Consulting with local government officials 3. Examine the map below, which of the following statements are true about this map? Choose ALL that apply. – Much of California and the greater Seattle area are expected to experience >250 damaging earthquake shaking events in the next 10,000 years – Areas on the map that have the same color will have the same level of damage if an earthquake occurs. – Damaging earthquake shaking on this map rates as a level VI or higher on the Modified Mercalli Intensity scale. – Even though this map shows occurrences over 10,000 years, it is possible that these earthquakes could occur much sooner – Grey areas on the map have no chance of experiencing damaging shaking from an earthquake – This map predicts when an earthquake will occur 4. True or False: High earthquake hazard always means high risk. Group of answer choices – True – False 5. Which of the following statements is true about National Seismic Hazard Maps? Choose ALL that apply. Group of answer choices – Some maps are designed to inform engineers on the design of small residential structures affected by high frequency ground motion due to earthquakes or explosions. – Some maps are useful for designing tall buildings and long bridges that are more susceptible to longer wavelength ground shaking – They are updated every 6 years – They are only available for the most seismically active states in the United States 6. True or False: We don’t really need to worry about the earthquakes on this map because they won’t happen for another 10,000 years. Group of answer choices – True – False 7. What is the goal of the National Seismic Hazard maps? Group of answer choices – To improve earthquake-resilient construction world wide. – To discourage people from building near or in Seismic Hazard zones. – To improve earthquake-resilient construction in the United States. – To provide an estimate of how hard the United States economy will be hit by major earthquakes nationwide. 8. Imagine a scenario where two towns, Town X and Town Y, are located near the same earthquake-producing fault. Which of the following statements could explain why Town X has a higher risk even though both towns face the same hazard. Group of answer choices – Town X and Town Y have the exact same population number. – Town X has buildings that are NOT built to withstand earthquake ground shaking. – Town X was established before Town Y. – The mayor of Town X is trained as a seismologist. 9. True or False: Geologic hazards are naturally-occurring phenomena capable of causing loss or damage; whereas, risk is the potential that exposure to the hazard will lead to a negative consequence, such as loss of life or economic loss. Group of answer choices – True – False 10. When you examine the Earthquake Shaking Potential for the Los Angeles Metropolitan Region it is clear that this region will experience relatively strong and frequent earthquakes. Which of the following cities have the highest level of earthquake hazard? Choose ALL that apply. Group of answer choices – Los Angeles – San Bernardino – Huntington Beach – Riverside 11. Which of the following messages should Californians keep in mind when they consider the impact of future earthquakes in our state. Choose ALL that apply. Group of answer choices – Earthquakes have produced over $55 billion in losses in California since 1971 and may produce even greater losses if they occur in major urban areas – San Francisco Bay Area and Los Angeles lie in the State’s highest hazard zones – Current building codes are intended to both prevent widespread loss of life by keeping the buildings from collapsing and to protect the building from damage. – After a large earthquake, residents and businesses may be isolated from basic police, fire, and emergency support for a period ranging from several hours to a few days – Citizens must be prepared to survive safely on their own, and to aid others, until outside help arrives. – Having maps of the shaking intensity available on the internet within minutes of the next major earthquake will guide emergency crews to the most damaged regions and will help the public identify the areas most seriously affected 12. True or False: The Earthquake Shaking Potential for California Map shows the relative intensity of ground shaking in California from anticipated future earthquakes. Group of answer choices – True – False 13. When you examine the Earthquake Shaking Potential for the Los Angeles Metropolitan Region it is clear that this region will experience relatively strong and frequent earthquakes. Which of the following reasons could explain why this area will experience intense shaking? Choose ALL that apply. Group of answer choices – The Los Angeles Metropolitan relatively close to the San Andreas – According to Geologic Hazard 1, there are multiple faults running through the Los Angeles Metropolitan Region – The ground beneath Los Angeles’ “feet” is mainly unconsolidated/semiconsolidated (i.e. loose) rock which will effectively “trap” seismic energy – There is a Oceanic-Continental Convergent Boundary just off the coast 14. Zoom out so you can see the entire state on the Earthquake Shaking Potential for California map. Which of the following statements is NOT true? Group of answer choices – The strongest and most frequent earthquake shaking is concentrated along the San Andreas Fault – The San Andreas Fault is a Oceanic-Continental Convergent Boundary – The Sierra Nevada range will experience the lightest and most infrequent earthquake shaking – The Los Angeles basin will experience strong and frequent earthquake shaking 15. This map was created by the California Geological Survey and the USGS (United States Geological Survey). Group of answer choices – True – False 16. Expected long-term average earthquake damage in California is not expected to cost California anything because the state has taken the necessary steps to protect itself from damaging earthquakes. Group of answer choices – True – False 17. Which color on the Earthquake Shaking Potential for California map shows where the strongest and most frequent shaking will occur? Group of answer choices – Green – Yellow – Red – Pink 18. True or False: Even areas colored as green on the Earthquake Shaking Potential for California map could experience earthquake damage. Group of answer choices – True – False 19. What would a powerful earthquake feel like where you live? To answer this question: 1. Open the following link: LA Times: What would a powerful earthquake feel like where you live? 2. Links to an external site. 3. Type your address into the text box below the phrase ” Search for your address.” If you don’t live locally or your address doesn’t work, you can use SMC’s Main Campus’ address: 1900 Pico Boulevard, Santa Monica, CA 90405. (use this address) 4. Copy and paste the paragraph describing what it would feel like for you in the textbox below. For example, my address yielded the following results: “One of the worst scenarios for this location is a magnitude 7.2 earthquake along the Newport-Inglewood fault. This location would experience severe shaking that could cause partial collapse and considerable damage to normal buildings. This fault is located near the ports of Los Angeles and Long Beach and could produce a damaging surface rupture in the dense urban environment of Los Angeles.” NOTE: If you hit a paywall (i.e. it asks you to subscribe to continue), don’t worry. Simply type “hit a paywall” into the textbox and you will still earn full credit for this question. 20. Finish the sentence. Long-period earthquake shaking: Choose ALL that apply. Group of answer choices – Affects tall, relatively flexible buildings – Is rare – Correlates well with overall earthquake damage – Only occurs every 50 years 21. What should you do if you feel an earthquake or become aware that one has occurred while you are on the coast? Group of answer choices – Stay put, moving could put you in danger – Move to high ground – Wait until you are told what to do by a lifeguard – Walk parallel to the shore, opposite the long shore current 22. A tsunami is a wave, or series of waves, generated by an earthquake, landslide, volcanic eruption, or even a large meteor hitting the ocean. Group of answer choices – True – False 23. Which of the following statements is true about Tsunami Hazards in California? Choose ALL the apply. Group of answer choices – More than 80 tsunamis have been observed or recorded in California history. – Large offshore faults and massive submarine landslides are two local tsunami sources – The Cascadia Subduction Zone is an example of a local tsunami source that could threaten northern California – A tsunami struck the Santa Barbara and Ventura coastline on December 21, 1812 24. An approaching tsunami is sometimes preceded by a rise or fall of water levels or strange bubbling in the tidal areas. Group of answer choices – True – False 25. According to the Tsunami Inundation Map for Emergency Planning Beverly Hills Quadrangle, which of the following statements are true? Choose ALL that apply. Hint: SMC can be found on this map by starting in the lower left-hand corner and counting 3.5 squares to the right and looking for SMC in the square above. Note: on this map, SMC will be called Santa Monica City College. Group of answer choices – SMC is not in the Tsunami Inundation Area – The Santa Monica Pier could be destroyed by a tsunami – People on the Santa Monica Beach coastline could be in the hazard path of a tsunami – There are 5 local sources and 11 distant sources that could trigger a tsunami along the Santa Monica coastline

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