2 53) The ________ is the site of initial rupturing associated with an earthquake.
  • inner
  • focus
  • iron
  • basalt
1 50) ________ is the name of the earthquake-magnitude scale based on the amount of seismic energy released during the event.
  • 30 times
  • Lithosphere
  • Asthenosphere
  • Richter
1 56) ________ is the layer of warm rock below the crust and uppermost mantle that readily deforms and flows plastically.
  • Asthenosphere
  • Tsunami
  • Liquefaction
  • Lithosphere
1 54) What is thought to be the material state (liquid, solid, gas) and elemental composition of Earth's outer core?
  • Lithosphere
  • peridotite
  • Tsunami
  • liquid iron
1 55) ________ is the cool, brittle, outer layer of Earth that includes the crust and uppermost mantle.
  • Lithosphere
  • Asthenosphere
  • Tsunami
  • liquid iron
1 49) What instrument is used to record earthquake vibrations?
  • seismograph
  • seismogram
  • epicenter
  • surface wave
1 52) An earthquake of magnitude 7.5 releases about how much more energy than one of magnitude 5.5?
  • 30 times
  • Asthenosphere
  • surface waves
  • 900 times more
1 51) ________ is another name commonly used by scientists to denote seismic sea waves induced by earthquakes.
  • Richter
  • Tsunami
  • Lithosphere
  • Asthenosphere
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