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earth quake
vocab
| Term | Definition |
|---|---|
| earthquake | causes vibrations in the ground that result from movement along breaks in Earth's lithosphere |
| epicenter | location directly above the focus of an earthquake. |
| fault | break in Earth's lithosphere where one block or rock moves toward away from or past another |
| 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. |