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Analyzing earthquake
| Term | Definition |
|---|---|
| Body wave | An earthquake wave that travels through the body of earth rather than on its surface. |
| Surface wave | An earthquake wave that travels at or near the surface of earth |
| p-wave | A primary earthquake wave that travels through the body of earth |
| s-wave | a secondary earthquake wave, so named because it travels slower than a primary wave and is the second wave to reach the seismograph station after an earthquake |
| Aftershock | An earthquake that occurs later along the same fault zone as a major earthquake, but before the area has returned to its normal level of seismic activity |
| epicenter | Location on Earth's surface directly above an earthquake's focus, or origin |
| focus | Location beneath Earth's surface where the energy of an earthquake is released |