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8.6 NH Final Exam
| Term | Definition |
|---|---|
| Cone of Uncertainty | The cone represents the probable track of the center of a tropical cyclone. |
| Tornado | A Mobile, destructive vortex of violently rotating winds having the appearance of a funnel-shaped cloud and advancing beneath a large storm system. |
| Hurricane | A storm with a violent wind, in particular a tropical cyclone in the Caribbean. |
| Volcanic Eruption | When gas and/or lava are released from a volcano—sometimes explosively. |
| Flood | Occurs when an overflow of water submerges land that is usually dry. |
| Natural Disaster | A natural event such as a flood, earthquake, or hurricane that causes great damage or loss of life. |
| Forecast | A scientific claim about the likelihood that an event will occur in the future. |
| Risk | The chance (probability) that a danger or hazard will occur. |
| Natural Hazard Forecast | A scientific claim about the likelihood of a natural hazard event occurring in a particular place. |
| Storm Surge | An abnormal rise in sea level along the coast caused by a storm. |
| Monitoring | To make measurements and observations over time to keep track of something. |
| Magnitude | A measurement of the energy or strength of a natural hazard event. Generally, the stronger the hazard, the greater its magnitude. |
| Saffir-Simpson Scale | A system for classifying the intensity of a hurricane based on its wind speed. |
| Severity | Extent of damage, or loss from a natural hazard event. |
| Mitigate | Make less severe, serious, or painful. |
| Tectonic Plate | A piece of Earth's crust. |
| Fault | A fracture or zone of fractures between two blocks of rock. |
| Tectonic Plate Boundary | The border between two plates. |
| Convergent Boundary | Where two plates are moving toward each other. |
| Divergent Boundary | Where two plates are moving away from each other and a new crust is forming from magma that rises to the Earth's surface. (Volcanoes) |
| Transform Boundary | When two plates slide past each other in opposite directions. |
| Precursor | An event that occurs before a natural hazard can help in predicting that the hazard event will occur. |
| Seismometer | An instrument that measures and records details of earthquakes, such as force and duration. |
| Earthquake | Sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action. |
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