The recurrence interval ____

a. ?specifies the time that earthquakes of unknown magnitude will occur in a single area
b. ?predicts the time and magnitude of major earthquakes
c. ?predicts the average occurrence of major earthquakes in a single area
d. ?predicts the time and magnitude of minor earthquakes
e. ?specifies the average occurrence of major and minor earthquakes along a complete fault


ANSWER: c

Environmental & Atmospheric Sciences

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A)explosive volcanic activity B)rapidly cooling plutons C)viscous lava flows D)basalt and gabbro E)melting of country rock

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Instead of the air flowing straight out of a high pressure system, it spirals out in a clockwise direction. The cause of the clockwise spiraling motion is:

A) pressure gradient force. B) centripetal force. C) inertia. D) Coriolis force. E) turbulence.

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Tsunamis in the open ocean can travel as fast as jet airplanes.

Answer the following statement true (T) or false (F)

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Rip currents _____

a. move parallel to the shoreline b. are fast moving swash c. are caused by the motion of the combined Earth-Moon system d. are due to the centrifugal force of rotation e. flow toward deep water from the nearshore zone

Environmental & Atmospheric Sciences