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26) ________ have the highest velocities. A) Primary waves B) Secondary

Question : 26) ________ have the highest velocities. A) Primary waves B) Secondary : 2086509

26) ________ have the highest velocities.

A) Primary waves B) Secondary waves

C) Refracted S waves D) Surface waves

27) The amount of destruction caused by earthquake vibrations is affected by ________.

A) intensity and duration of the vibrations B) design of structures

C) nature of the surface material D) all of these

28) The record of an earthquake obtained from a seismic instrument is a(n) ________.

A) seismogram B) epigraph

C) seismograph D) time-travel graph

29) The elastic rebound theory for the origin of earthquakes was first proposed by ________ following the ________ earthquake.

A) Mohorovicic; 1964 Anchorage B) Reid; 1906 San Francisco

C) Richter; 1989 Loma Prieta D) Giuseppe; 1925 Pizza Lake

30) The ________ Magnitude is a measure of the total energy released. It does not directly measure the extent of building damage.

A) Mercalli B) Reid C) Moment D) Gutenberg

 

 

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Geology 2 Years Ago 375 Views
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