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Earthquakes/volcanos
| Question | Answer |
|---|---|
| A movement or trembling of the ground that is caused by a sudden release of energy when rocks along a fault move. | Earthquake |
| A 12 point scale for representing the local intensity of an earthquake | Mercalli scale |
| A series of extremely large waves caused by a sudden displacement of water | tsunami |
| A logarithmic scale that measures the magnitude and energy of an earthquake | richter scale |
| A smaller earthquake following the main shock | aftershock |
| A fracture zone of fractures in rock where there has been movement or displacement | fault |
| The fastest type of seismic wave | p-waves |
| A seismic body wave that causes particles in a solid medium to move back and forth perpendicular | s-waves |
| The branch of science concerned with earthquakes and related phenomena | seismology |
| The sliding down of mass of earth or rock from a mountain or cliff | landslide |
| A mountain or hill, having a crater or vent through lava, rock fragments, hot vapor, and gas are being or have been erupted from the earths crust | volcano |
| The point of earths surface vertically above the focus of an earthquake | epicenter |
| An instrument used to detect and record the intensity, duration, and features of earthquakes and other ground motions | seismograph |
| The specific point within earth where the seismic rapture starts | focus |
| A major area within the earth where lots of seismic and volcanic activity occur | ring of fire |
| When earthquake shaking causes saturated soil, like sand, to temporarily behave like liquid instead of soil | liquefaction |
| slowest body wave | s-wave |
| s-waves only travel through | solids |
| Which waves don't travel through earth | surface waves |