1) The elastic rebound theory for the origin of earthquakes was first proposed by ________ following the ________ earthquake. A) Reid; 1906, San Francisco B) Giuseppe; 1925, Pizza Lake C) Richter; 1989, Loma Prieta D) Mohorovicic; 1964, Anchorage 2) When an earthquake occurs, energy radiates in all directions from its source. The source is also referred to as the ________. A) inertial point B) epicenter C) focus D) seismic zone 3) Which one of the following statements is correct? A) P waves travel through solids; S waves do not. B) P and S waves travel through liquids, but P waves do not travel through solids. C) S waves travel through solids and P waves travel through liquids. D) P and S waves travel through liquids, but S waves do not travel through solids. 4) ________ have the highest velocities. A) Primary waves B) Secondary waves C) Surface waves D) Refracted S waves 5) Which one of the following is true regarding tsunamis? A) They travel as deep-water waves at speeds greater than surface seismic waves but slower than S waves. B) Their wave heights decrease and wavelengths increase as they move into shallower water. C) They are started by fault-induced, horizontal shifts in the seafloor that suddenly propel great masses of water in opposite directions. D) They occur in the open ocean, wavelengths are many miles or kilometers and wave heights are only a few feet. 6) The amount of destruction caused by earthquake vibrations is affected by ________. A) design of structures B) intensity and duration of the vibrations C) nature of the surface material D) all of these 7) On a typical seismogram, ________ will show the highest amplitudes. A) P waves B) S waves C) surface waves D) body waves 8) Major earthquakes are often followed by somewhat smaller events known as ________. A) aftershocks B) foreshocks C) tremors D) hyposhocks 9) The ________ magnitude scale is a measure of the energy released. It does not directly measure the extent of building damage. A) Gutenberg B) Reid C) Mercalli D) Richter 10) The instrument that records earthquake events is termed a ________. A) polygraph B) thermograph C) seismograph D) barograph 1