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chapter 8 & 10 vocab
| Term | Definition |
|---|---|
| earthquake | movements of the ground due to sudden release of energy |
| focus | point in Earth’s interior where the earthquake occurred |
| seismic waves | waves of energy released by an earthquake |
| epicenter | point on Earth’s surface directly above the focus |
| elastic rebound | sudden return of deformed rock back to undeformed shape |
| body waves | seismic waves that move through the inside (body) of Earth ~ include primary (P) & secondary (S) |
| p waves | push-pull body waves |
| s waves | side-to-side body waves |
| surface waves | seismic waves that move on Earth’s surface |
| seismograph | all seismic waves are recorded on a seismograph |
| seismogram | pen traces vibrations onto a moving drum of paper to create a seismogram |
| richter scale | numerical scale (1 - ?) based on height of largest seismic wave (magnitude) |
| moment magnitude scale | numerical scale (1 - ?) based on height of largest seismic wave (magnitude) |
| modified mercalli scale | Roman numeral scale (I – XII) that measures the intensity (ground shaking) created by an earthquake |
| liquefacation | |
| tsunami | |
| seismic gap | |
| crust | |
| mantle | |
| outer core | |
| inner core | |
| moho | |
| ring of fire | most volcanoes AND earthquakes are concentrated along the edge of the Pacific Ocean is where many different plates meet this area is called the Pacific Ring of Fire |
| hot spot | |
| viscosity | |
| vent | |
| pyroclastic material | |
| volcano crater | |
| shield volcano | |
| cinder cone | |
| composite volcano | |
| caldera | |
| lahar | |
| pluton | |
| sill | |
| laccolith | |
| dike | |
| batholith |