The Richter scale is set up so that for every ________ increase in the amplitude of the recorded seismic wave, the Richter magnitude increases one number, e.g., from 4 to 5.
A. two-fold
B. ten-fold
C. eight-fold
D. hundred-fold
E. four-fold
Answer: B
You might also like to view...
The Romance languages evolved from ________ spoken by the ________ 2,000 years ago
A) Latin, Romans B) Greek, Greeks C) Romania, Romanian people D) Latin, monks E) Greek, Romans
Photosynthesis
A) removes carbon dioxide from the air. B) lowers atmospheric oxygen concentrations. C) will not be affected if global warming accelerates. D) only occurs on land. E) none of the above
The ________ collectively make up the lithosphere.
A. crust and the whole mantle B. crust and the uppermost part of the mantle C. asthenosphere and the upper mantle D. crust and the asthenosphere E. upper and the lower mantle
Which of the following is true about how waves form and break upon the shore?
A) Most waves form from upwelling of deep waters. B) Waves get smaller as wind speed increases. C) Waves begin to change when they reach water shallower than wave base. D) Waves break in a counterclockwise direction because of rotation of the Earth. E) None of these are correct.