Earthquakes and Plate Tectonics

When did the great Alaskan earthquake occur?

• March 27, 1964

• March 27, 1965

• March 27, 1974

• March 27, 1975

What was the magnitude of the great Alaskan earthquake?

• 9.0

• 8.5

• 9.2

• 9.5

What caused the great Alaskan earthquake?

• Volcanic eruption

• Plate tectonics

• Meteor impact

• Human activity

What type of earthquake is a megathrust earthquake?

• Subduction zone

• Reverse fault

• Normal fault

• Strike-slip fault

Which plates were involved in the great Alaskan earthquake?

• Pacific and Eurasian plates

• Pacific and North American plates

• South American and Antarctic plates

• North American and African plates

What is the rate of collision between the Pacific and North American plates?

• 8.1 centimeters per year

• 5.8 centimeters per year

• 3.5 centimeters per year

• 1.2 centimeters per year

Where do most earthquakes occur?

• Near volcanic regions

• In the middle of tectonic plates

• Along plate boundaries

• In areas with high human population

What type of fault is the San Andreas Fault in California?

• Transform fault

• Strike-slip fault

• Normal fault

• Reverse fault

What is the main purpose of the US Geological Survey's earthquake hazards program?

• To monitor seismic activity

• To provide earthquake warnings

• To study earthquake science

• To predict earthquakes

How many detectable earthquakes occur worldwide each year?

• 500,000

• 10,000

• 1,000,000

• 100,000