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10 Cards in this Set
- Front
- Back
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What are faults?
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They are surfaces on which rocks move when their elastic limit is passed and they break.
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What is an earthquake?
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Vibrations produces when rocks along a fault break because the force on them is great enough.
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What is compression?
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It is the force that squeezes rocks together.
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What is tension?
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It is the force that pulls rocks apart.
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What is shear?
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It is the force that causes plates to move sideways past each other.
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What kinds of faults are caused by tensional forces?
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Normal faults are caused by tensional forces.
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Describe a normal fault.
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Rock above the fult surface moves downward in relation to rock below the fault surface.
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What kinds of faults are caused by cimpressional forces?
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Reverse faults are caused by compressional forces.
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What kinds of faults are caused by shear forces?
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Strike-slip faults are caused by shear forces.
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Describe a reverse fault.
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Rocks on either side of the fault surface move past each other.
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