Cascadia Megaquake Quiz

What historical event helped scientists pinpoint the last Cascadia Megaquake?

• A massive storm that hit the region

• A series of landslides along the coast

• A volcanic eruption in the Pacific Northwest

• A mysterious orphan tsunami recorded in Japan

What makes the Cascadia Subduction Zone particularly dangerous?

• Its location in a densely populated area

• Its seismic quietness despite being active

• Its history of frequent small earthquakes

• Its proximity to a major city

What is the estimated chance of a major earthquake occurring in the Pacific Northwest in the next 50 years?

• 50%

• 10%

• 33%

• 25%

What is the expected duration of shaking during a Cascadia Megaquake?

• Less than a minute

• One to two minutes

• Three to six minutes

• Over ten minutes

What percentage of Oregon's fuel is processed through the critical energy infrastructure hub?

• 100%

• 50%

• 70%

• 90%

What is liquefaction and why is it a concern during an earthquake?

• The process of soil turning into liquid, causing structural instability

• The melting of ice caps, leading to flooding

• The freezing of water pipes, leading to infrastructure damage

• The solidification of magma, causing volcanic eruptions

What could happen if the fuel tanks along the Willamette River fail during an earthquake?

• They could be unaffected due to modern construction

• They could be easily contained by emergency services

• They could cause a minor spill with no major consequences

• They could release a toxic cloud and cause fires

How might climate change exacerbate the effects of a Cascadia Megaquake?

• By raising sea levels, increasing flood risk

• By causing more severe weather patterns

• By making the ground more stable

• By increasing the frequency of earthquakes

What is one of the most important actions individuals can take to prepare for a disaster?

• Move to a different region

• Stockpile food and water

• Get to know their neighbors

• Build a personal bunker

What is the potential impact of land subsidence during an earthquake?

• It could cause landslides in mountainous areas

• It could lead to permanent flooding of low-lying areas

• It could create new landmasses along the coast

• It could have no significant impact