| A | B |
|---|
| normal fault | a fault formed due to tension on rocks |
| strike-slip fault | fault due to shearing forces |
| focus | point where earthquake energy is released |
| epicenter | point on Earth's surface directly above the origin of an earthquake |
| surface wave | wave that produces the most surface |
| mantle | layer of Earth directly below the crust |
| seismograph | instrument that records seismic waves |
| magnitude | measure of energy released by an earthquake |
| tsunamis | seismic sea wave |
| seismologist | scientist who studies earthquakes |
