The Hawaiian mantle plume is a classic example of a long-lived mantle plume being used to demonstrate how the motion of a tectonic plate has changed over time. Which hot spot would be an even better indicator of the Pacific plate's motion over time?
A) Cape Verde mantle plume
B) Easter Island
C) Yellowstone
D) Caroline
E) Pitcairn
Answer: E
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Which of the following is often indicated by a hook-shaped echo on a radar screen?
A. a thunderstorm with very frequent lightning B. the possible presence of a tornado-producing thunderstorm C. a developing hurricane D. a rotating anvil cloud at the top of a thunderstorm
How is atmospheric nitrogen converted to a usable form in the biosphere?
A) Atmospheric nitrogen is directly available to plants and animals. B) Atmospheric nitrogen is completely unavailable to plants and animals and, as a result, synthetic fertilizers must be used. C) Bacteria within root nodules of legumes chemically combine the atmospheric nitrogen into nitrates and ammonia. D) It is absorbed into plants via stomata and converted within the plant to a usable form.
Ground shaking in areas with very wet ground can cause
A. liquefaction. B. tsunami. C. aftershocks. D. P waves.
A fault
A. is a fracture along which offset has occurred. B. is a seismic gap. C. is a fracture along which offset has not occurred. D. is a special type of fold.