Exam 3: Earthquakes and Their Causes

The _______________ scale uses only objective measurements to describe an earthquake's intensity.

A 6.0 Richter magnitude earthquake would be expected to produce the most property damage in a(n) ____.

Normal faults are most common near subduction zones.

Describe the key elements of what happens to rock before, during and after an earthquake in the elastic rebound theory.

The largest earthquakes occur in ____.

The Cascadia fault in the Pacific Northwest is currently has ____.

The amount of positive or negative wave motion is referred to as the ____ of the wave.

____ waves have the largest amplitude of motion.

A mud volcano is an effect of ____.

A transform boundary would naturally produce ____ faults.

The Richter magnitude is determined by measuring the amplitude of wave motion on a seismograph.

Increased earthquake magnitude above 6.0 would be expected to produce which effect?

A previously undiscovered fault may be detected in a ____ event.

_______________ faults move rock above the fault up and over rock below with a steep fault surface incline.

Eastern North American areas such as Missouri are at risk of suffering _______________ earthquakes.

Long fault lines spread out stress and produce smaller earthquakes than short ones.

_______________ waves are the last to arrive as the result of an earthquake, producing a rolling motion of the ground.

You would be at most risk of an intraplate earthquake in which metropolitan area of the United States?

Strain in a fault can be released slowly by _______________ if segments of the fault slip slowly and continuously.

Which type of waves are called "body waves" because they move through the interior of Earth?