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Vocanulary
| Term | Definition |
|---|---|
| Earthquake | A sudden violent sake of the ground. |
| crust | Form into a hard outer layer. |
| fault | an unattractive or unsatisfactory feature |
| mantle | an important role or responsibility that passes from one person to another. |
| lithosphere | the rigid outer part of the earth, consisting of the crust and upper mantle. |
| lithosphere plates | regions of Earth's crust and upper mantle. |
| seismologists | propagation of elastic waves through the Earth or through other planet-like bodies. |
| convergent | coming closer together, approaching a definite limit. |
| divergent | increasing indefinitely as more of its terms are added. |
| transform | make a thorough or dramatic change in the form. |
| subduction | These boundaries mark the collision between two of the planet's tectonic plates. |
| convection | the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise. |
| s-wave | Moves through the body of an object |
| p-wave | A longitudinal earthquake wave that travels through the interior. |
| surface wave | A seismic wave that travels across the surface of the Earth as opposed to through it. |
| focus epicenter | The point on the Earth's surface located directly above the focus of an earthquake. |
| Mercalli scale | The Mercalli intensity scale is a seismic scale used for measuring the intensity of an earthquake. |
| Ricter scale | A numerical scale for expressing the magnitude of an earthquake on the basis of seismograph oscillations. |
| moment magnitude scale | Measure the size of earthquakes in terms of the energy released. |
| magnitude | the great size or extent of something. |
| tusnami | A long high sea wave caused by an earthquake. |
| liquifactor | Process which either generates a liquid from a solid or a gas, or generates a non-liquid phase which behaves in accordance with fluid dynamics. |
| aftershock | A smaller earthquake following the main shock of a large earthquake. |
| seismology | the branch of science concerned with earthquakes and related phenomena. |
| seismograph | an instrument that measures and records details of earthquakes, such as force and duration. |
| compression | the reduction in volume (causing an increase in pressure) of the fuel mixture in an internal combustion engine before ignition. |
| tension | the state of being stretched tight. |
| plateau | an area of relatively level high ground. |
| shearing | the external force acting on an object or surface parallel to the slope or plane in which it lies |
| normal fault | . A geologic fault in which the hanging wall has moved downward relative to the footwall |
| reverse fault | A geologic fault in which the hanging wall has moved upward relative to the footwall |
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