Hess's original hypothesis was that sea-floor spreading is driven by deep mantle ________.
A. transform faults
B. convection
C. spreading centers
D. contraction
E. convergent boundaries
Answer: B
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An electrically polarized party balloon normally has
A. displaced charges. B. a net charge of zero. C. both of these D. none of the above
How does Europe compare in size (area) to the United States?
A) It is the same size as the United States.
B) It is about the size of the state of Texas.
C) It is equal in size to the continental United States plus Alaska and Hawaii.
D) It is the largest continent on the planet, far larger than the United States.
E) It is roughly two-thirds of the United States.
Large, high mountain ranges without volcanoes are built at which type of plate boundary?
a. divergent: oceanic-oceanic b. convergent: oceanic-continental c. convergent: continental-continental d. transform: continental-continental e. divergent: oceanic-oceanic AND convergent: continental-continental
Which of the following can influence whether a shoreline gains or loses sand with time?
A. the amount of sediment in rivers B. the amount of precipitation on land C. prevailing wind direction D. a longshore current E. All of these choices are correct.