Exam 7: Earthquakes

____ are the waves of energy produced by an earthquake.

A _____ is the first wave to arrive at a recording station following an earthquake.

A seismogram is a recording device that produces a permanent record of earth motion.

The point on the earth's surface immediately above the focus is the seismic center.

If the measured amplitude of vibration of a rock is 1 cm for a magnitude 4 earthquake then the rocks will move ______ during a magnitude 5 earthquake.

A(n)_______ is a seismic sea wave.

Deep focus earthquakes occur at a maximum depth of ______.

_____ earthquakes probably occur along older faults that are no longer at plate boundaries,for example the New Madrid Missouri earthquakes of 1811-1812.

Which of the following is not used to aid in earthquake prediction?

____ -waves are the slowest body waves.

The point within the earth where seismic waves first originate is the _____.

_____ is a measure of an earthquake's effect on people and buildings.

Surface waves are the fastest earthquake waves.

One suggested cause of deep focus earthquakes is ______.

For most of the 20^th century earthquake magnitude was reported on the _______ scale,a scale that has never exceeded a magnitude 8.6.

The ______ is the most famous example of a right lateral transform fault.

The most important concentration of earthquakes in the world is the Mediterranean-Himalayan Belt.

____ focus earthquakes are the most common.

S-waves pass through solid rocks and liquids.

The most important concentration of earthquakes by far is ______.