________ is the widely accepted explanation for the mechanism that generates earthquakes.
A)Dow's recovery theory
B)Dupont's plastic-slip theory
C)Richter's wave-snap theory
D)Reid's elastic rebound theory
Which one of the following statements concerning hypocentres and epicentres is correct?
A)The hypocentre is the faulted point on the surface directly above the epicentre.
B)The fault first cracks at the epicentre and breaks through to the surface at the hypocentre.
C)The epicentre is at the surface directly above the hypocentre where the earthquake initiates.
D)The earthquake starts at the hypocentre and the rupture extends down to the epicentre.
________ formulated the elastic rebound theory after the ________ earthquake.
A)Gutenberg; Anchorage, 1964
B)Churchill; northern India, 1896
C)Richter; Loma Prieta, 1989
D)Reid; San Francisco, 1906
Energy is stored in rocks adjacent to the site of a future earthquake as ________.
B)ballistic shock waves