Earthquakes in the Cascadia Subduction Zone

What is the Cascadia Subduction Zone known for?

• Frequent volcanic eruptions

• Long history of seismic activity

• Rich deposits of minerals

• Abundant marine life

When did the most recent major earthquake in the Cascadia Subduction Zone occur?

• January 26, 1600

• January 26, 1700

• January 26, 1800

• January 26, 1900

Why do scientists study the history of the Cascadia Subduction Zone?

• To find new mineral resources

• To predict future earthquakes and ensure safety

• To understand the migration of marine species

• To explore ancient civilizations

What natural event in Japan provided evidence of the 1700 earthquake?

• A volcanic eruption

• A large tsunami

• A massive landslide

• A severe drought

How do scientists know about the 1700 earthquake in the Cascadia Subduction Zone?

• Through written records in the Pacific Northwest

• Through oral traditions of local tribes

• Through reports from other parts of the world, like Japan

• Through modern seismic equipment

Based on the information provided, which location is most likely to experience earthquakes more often?

• • Vancouver because it is located closest to the Juan de Fuca plate boundary.

    Vancouver because it is located closest to the Juan de Fuca plate boundary.

• • California (CA) because it had earthquakes of the greatest magnitude.

    California (CA) because it had earthquakes of the greatest magnitude.

• • Oregon (OR) because it is affected by earthquakes from all three sources.

    Oregon (OR) because it is affected by earthquakes from all three sources.

• • Washington (WA) because it had recent volcanic activity at Mt. St. Helens.