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| the point beneath Earth's surface where rock breaks under stress and causes an earthquake |
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| the point on Earth's surface directly above an earthquake's focus |
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| vibrations that travel through Earth carrying the energy released during an earthquake |
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| a type of seismic wave that compresses and expands the ground |
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| a type of seismic wave that moves the ground up and down or side to side |
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| types of seismic waves that form when P waves and S waves reach Earth's surface |
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| a device that records ground movements caused by seismic waves as they move through Earth |
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| the measurement of an earthquake's strength based on seismic waves and movement along faults |
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| a scale that rates earthquakes according to their intensity and how much damage they cause |
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| a scale that rates seismic waves as measured by a particular type of mechanical seismograph |
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| a scale that rates earthquakes by estimating the total energy released by an earthquake |
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| the process by which an earthquake's violent movement suddenly turns loose soil into liquid mud |
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| an earthquake that occurs after a larger earthquake in the same area |
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| large waves produced by an earthquake on the ocean floor |
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| a building mounted on bearings designed to absorb the energy of an earthquake |
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