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8.6NH Final Exam
Term | Definition |
---|---|
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 violent wind, in particular a tropical cyclone in the carribean |
Earthquake | A sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements with the Earth' s crust or volcanic action |
Volcanic eruption | A volcanic eruption occurs when hot materials from the Earth's interior are thrown out of a volcano |
Flood | An overflowing of a large amount of water beyond its normal confines especially over what is normally dry land |
Risk | The chance that a danger or hazard will occur |
Forecast | A scientific claim about the likelihood that an event will occur in the future |
Natural hazard forecast | A scientific claim about the likelihood of a natural hazard event occurring in a particular place |
Flood plan | An area of low-lying ground next to a river, formed mainly of river sediments |
Storm surge | An abnormal rise in sea level along the coast caused by a storm |
Magnitude | A measurement of energy or strength of a natural hazard event. Generally, the stronger the hazards, the higher the magnitude |
Saffir-Simpson Scale | A system for classifying the intensity of a hurricane based on its wind speed |
Precursor | An event that occurs before a natural hazard can help in predicting that the natural hazard event will occur |
Cone of Uncertainty | The visual picture of hurricane forecast on a map` |
Convergent Boundary: | a location in Earth’s crust and mantle where two tectonic plates crash into one another, either one going under the other, or colliding into one another |
Divergent Boundary | a location in Earth’s crust and mantle where two tectonic plates move apart from one another |
Transform Boundary | a location in Earth’s crust and mantle where two tectonic plates slide past one another |
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. |