Our Dynamic Earth
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16 terms
Terms | Definitions |
|---|---|
 atmosphere | the gaseous envelope surrounding the earth; the air |
| earthquake | a series of vibrations induced in the earth's crust by the abrupt rupture and rebound of rocks in which elastic strain has been slowly accumulating |
| hot spot | a stationary location in Earth's mantle where magma melts through a tectonic plate |
| magma | hot, melted rock below Earth's surface |
| fault | (geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other |
| geologist | a person who studies rocks |
| magnitude | the amount of energy released by an earthquake |
| focus | the point where an earthquake starts |
| landform | a physical feature on Earth's surface |
| lava | hot melted rock that flows from a volcano |
| crust | the outer layer of the earth |
| epicenter | the point on Earth's surface directly above an earthquake's focus |
| volcano | an opening in Earth's crust through which lava may flow |
| erosion | the process of moving sediment from one place to another |
| mantle | a nearly melted layer of hot rock below Earth's crust |
| tsunami | a giant wave caused by an earthquake on the ocean floor |
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