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| shear forces push on rock in opposite horizontal directions |
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| A force that compacts rock to form a reverse fault |
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| rock above the normal fault surface moves downward in relation to the rock below the fault surface |
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| break in rock caused by shear forces where rocks move past each other without much vertical movement |
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| break in rock caused by tension forces where rock above the fault surface moves down relative to the rock below the fault surface |
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| break in rock caused by compression forces where rock above the fault surface moves upward relative to the rock below the fault surface |
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| surface along which rocks move when they pass their elastic limit and break. |
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| vibrations produced when rocks break along a fault surface |
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| measure of the energy released during an earthquake |
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| occurs when wet soil acts more like liquid during an earthquake |
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| instrument used to reister eartquake waves and record the time that each arrived |
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| in an earthquake, the point below the Earth's surface where energy is released in the form of seismic waves |
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| point on the Earth's surface directly above the Earth's focus |
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| wave generated by an earthquake |
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| seismic sea wave that begins over an earthquake focus and can be highly destructive when it crashes on shore |
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