# Moment magnitude scale: Quiz

 Question 1: This scale was based on the ground motion measured by a particular type of ________ at a distance of 100 kilometres (62 mi) from the earthquake.SeismologyReflection seismologySeismic waveSeismometer

 Question 2: As with earthquakes, during an underground explosion of a nuclear weapon, only a small fraction of the total amount of energy transformed ends up being radiated as ________.SeismologyS-waveRayleigh waveSeismic wave

 Question 3: A rule of thumb equivalence from seismology used in the study of ________ asserts that a one kiloton nuclear explosion creates a seismic signal with a magnitude of approximately 4.0.Nuclear weaponNuclear weapons testingNuclear proliferationNuclear arms race

 Question 4: The moment magnitude Mw is a ________ defined byReynolds numberDimensionless quantityKeulegan–Carpenter numberFluid dynamics

 Question 5: As with the Richter scale, an increase of 1 step on this ________ corresponds to a 101.5 ≈ 31.6 times increase in the amount of energy released, and an increase of 2 steps corresponds to a 103 = 1000 times increase in energy.Indefinite logarithmInformation theoryDecibelLogarithmic scale

 Question 6: The MMS is now the scale used to estimate magnitudes for all modern large earthquakes by the ________.Minerals Management ServiceUnited States Geological SurveyUnited States Fish and Wildlife ServiceNational Park Service

 Question 7: [2] The scale was developed in the 1970s to succeed the 1930s-era ________ (ML).2004 Indian Ocean earthquakeRichter magnitude scaleEarthquakeMoment magnitude scale

 Question 8: The moment magnitude (Mw) scale was introduced in 1979 by ________ seismologists Thomas C. Hanks and Hiroo Kanamori to address these shortcomings while maintaining consistency.University of Southern CaliforniaCalifornia Institute of TechnologyUniversity of California, San DiegoUniversity of California, Los Angeles

 Question 9: The moment magnitude scale (abbreviated as MMS; denoted as Mw) is used by seismologists to measure the size of ________ in terms of the energy released.LandslideGeotechnical engineeringEarthquakeS-wave

 Question 10: [7] For real ________, the actual seismic efficiency achieved varies significantly and depends on the site and design parameters of the test.Nuclear weapon designNuclear weaponUnderground nuclear testingNuclear weapons testing

Source: The Full Wiki (http://quiz.thefullwiki.org/Moment_magnitude_scale)