When Nature Strikes - Earthquakes

The video discusses the history and potential future of earthquakes in the Pacific Northwest, focusing on the risks posed by the Cascadia Subduction Zone. It highlights the work of John Vidalli and the Pacific Northwest Seismic Network in monitoring seismic activity and developing early warning systems. The video explains the nature of megathrust earthquakes, their potential impact, and the importance of preparedness and research in mitigating risks.

Which earthquake served as a wake-up call for the Pacific Northwest residents?

• The 1989 Loma Prieta Earthquake

• The 2011 Japan Earthquake

• The 2001 Nisqually Earthquake

• The 1700 earthquake

What is the primary cause of earthquakes?

• Tsunamis

• Hurricanes

• Volcanic eruptions

• Sudden movements of tectonic plates

What is the Cascadia Subduction Zone?

• A megathrust fault off the Pacific Northwest coast

• A volcanic region in the Pacific

• A fault line in California

• A tectonic plate in the Atlantic Ocean

What phenomenon can cause the ground to behave like a liquid during an earthquake?

• Volcanic eruption

• Liquefaction

• Avalanche

• Tsunami

Why is the Pacific Northwest Seismic Network monitoring ground motion in Seattle?

• To track wildlife movements

• To measure air quality

• To predict volcanic eruptions

• To understand liquefaction and its effects

What is the purpose of the early earthquake warning system being developed?

• To predict the exact time of an earthquake

• To provide crucial seconds for people to react

• To prevent earthquakes from occurring

• To measure the magnitude of past earthquakes

How can the early warning system help during an earthquake?

• By stopping the earthquake

• By providing data for future research

• By giving time to slow down traffic and stop trains

• By predicting the next earthquake