What is a use of understanding magnetic reversals?
A. matching the patterns of reversals in a rock sequence to the magnetic timescale
B. calculating rates of seafloor spreading
C. studying magnetic stripes on the seafloor
D. All of these.
Answer: D
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Which of the following results from increased numbers of aerosols in the atmosphere?
A. Fewer condensation nuclei are available. B. More shortwave radiation is reflected from clouds. C. More precipitation is produced from clouds. D. More ozone is depleted from the ozone layer.
What category of solid waste comprises the largest single proportion of municipal solid waste in the United States?
A) food waste B) plastics C) paper and paper products D) yard waste
What commonly follows a large earthquake?
a. aftershocks b. foreshocks c. seismic waves d. displacements
Geologists locate plate boundaries ____.
a. at continental margins b. at volcanoes c. by earthquake epicenters d. at volcanoes AND by earthquake epicenters e. All of these