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earthquakes
vocab
| Term | Definition |
|---|---|
| earthquake | causes vibrations in the ground that result from movement along breaks in earth's lithosphere |
| epicenter | location directly above focus of an earthquake |
| fault | break in earths lithosphere where one block of 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 |