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Earthquakes
| Term | Definition |
|---|---|
| Earthquake | causes vibrations in the ground that results from movement along breaks in Earth's lithosphere. |
| Epicenter | location directly above the focus of an earthquake. |
| Focus | location where rocks first move along a fault and seismic waves originate. |
| Seismic Wave | travels as vibrations on and in Earth. |
| Seismometer | measures and records ground motion and the distance and direction seismic waves travel. |