forces inside earth
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11 terms
Terms | Definitions |
|---|---|
 compression | force that squeezes rocks together |
| earthquake | vibrations produced by the breaking of rock |
| elastic deformation | rocks bent and stretched out of shape by force |
| plate movement | the constant motion of plates |
| fault | surface along which rocks move when they pass their elastic limit and break |
| shear | forces on either side of fault cause rocks to slide past each other |
| elastic limit | limit to how far rocks can bend and stretch |
| tension | the force that pulls rocks apart |
| strike slip fault | rocks on either side of the fault move past each other without much upward or downward movement |
| normal fault | results from tension, pulling rock apart; where the rock above the fault surface drops in relation to rock below the fault surface |
| reverse fault | results from compression forces squeezing rocks together; rock above the fault surface is forced up and over rock below the fault surface |
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