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| Term | Definition |
|---|---|
| fault | Is a long narrow crack in the crust along which movement has occurred. |
| mountain | Is a tall landform. |
| earthquake | Is a sudden shaking of Earths crust. |
| seismic waves | Are the vibrations caused by earthquake. |
| seismograph | Detect and record earthquake. |
| volcano | Is a mountain that builds up around an opening in Earths crust. |
| flood | Is an overflow of water onto land that is normally dry |
| hurricane | Is a very large, swirling storm |
| landslides | Is the sudden downhill movement of these materials in large amounts |