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8.6 NH Final Exam
Term | Definition |
---|---|
Mitigate | Make less severe |
Magnitude | A measurement of the energy or strength of a natural hazard event |
Precursor | An event that occurs before a natural hazard can help in predicting that the hazard event will occur. |
Monitor | To make measurements and observations over time to keep track of something |
Cone of Uncertainty | The visual picture of a hurricane forecast on a map |
Floodplain | An area of low-lying ground next to a river, formed mainly of river sediments |
Convergent | Where two tectonic plates crash into one another, either one going under the other, or colliding into one another |
Transform | Where two tectonic plates slide past eachother |
Fault | A fracture in the Earth’s crust, where two blocks of rock are being pushed past one another or where two blocks of rock were once pushed past one another. |
Seismic wave | A wave in the Earth produced by an earthquake |
Storm surge | An abnormal rise in sea level along the coast caused by a storm |
Severity | Extent of damage, or loss from a natural hazard event |
Intensity | Type of damage from a natural hazard |
Mercalli Scale | The magnitude scale is based on seismic records from earthquakes |
Saffir-Simpson Scale | A system for classifying the intensity of a hurricane based on its wind speed |
Enhanced Fujita Scale | Used to assign a tornado a rating based on estimated wind speeds and related damage |
Volcanic Explosive index | A numeric scale that measures the relative explosivity of historic volcanic eruptions |
Seismometer | An instrument used to measure the shaking from an earthquake |