Exam 8: A Violent Pulse: Earthquakes

If,during an earthquake,a hanging wall slides upward relative to a footwall,the fault is termed ____________ if the fault is shallow (much closer to horizontal than vertical).

Which earthquake severity scale varies from locality to locality for a single earthquake?

Surface waves ____________.

If a fault is nearly vertical in orientation and the two walls of rock on opposite sides slide past one another horizontally,the fault is termed ____________.

Which type of seismic wave has the highest velocity?

Why do some earthquakes last longer than others?

A fault cannot slip forever because __________ .

Seismometers,being able to detect ground movements of a millionth of a millimeter,are useful to governments worldwide for detecting not only earthquakes,but _______________.

The intersection between a fault plane and the ground surface is called the ____________.

According to the moment magnitude scale (Mw)-a magnitude 8 earthquake results in 1,000 times greater amplitude than a magnitude ____________ earthquake.

All else being equal,an earthquake that strikes in the eastern United States would produce shaking that would be felt ____________ than one that occurred in the western United States.

All discovered faults are likely to experience earthquakes in the next few hundred years.

Movement on a fault may occur without generating earthquakes.

Which earthquake severity scale takes into account the type of rock that has been fractured?

If,during an earthquake,a hanging wall slides upward relative to a footwall,the fault is termed ____________ if the fault is steep (closer to vertical than horizontal).

Which type of fault does NOT,by definition,have a fault trace?

Faults that have moved recently or are likely to move in the future are referred to as ____________.

The point on Earth's surface directly above the point where an earthquake occurs is termed the ____________.

Earthquake waves that pass through the interior of Earth are termed ____________.

Periods of intermittent sliding on a fault as a result of the release of stress during episodes of displacement,followed by stress buildup to the point that the fault is reactivated,is termed ____________.