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Earthquake
| Term | Definition |
|---|---|
| earthquake | causes vibration in the ground that results from movements along breaks in earths lithosphere |
| epicenter | location directly above the focus of an earthquake |
| fault | break in earths lithosphere where once block of rock moves toward away from or past another |
| focus | location where rocks first move along a fault and seismic waves originate |
| seismometer | measures and records ground motion and the distance and directions seismic waves travel |