GEOL105 Study Guide - Midterm Guide: Silicate Minerals, Clay Minerals, Oceanic Crust
15 Dec 2017
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Hazard: geological process that is a potential threat to life or property. Disaster: when a disaster has an impact; criteria: (1) 10 or more people killed, (2) 100 or more people affected, (3) a state of emergency is declared, (4) international assistance is requested. Catastrophe: massive disaster that requires significant amount of money and a long time for recovery to take place. Geological processes as energy and earth materials interacting to cause change: sources of energy: Internal heat from radioactive decay (from when earth was formed) Solar incoming light converted to heat in atmosphere, oceans, and land. Gravity drives landslides, water flow; creates pressure within the earth. Mechanical energy seismic waves, ocean waves and tsunami (energy traveling through matter. Potential resting energy (converts to kinetic) Disasters are now becoming catastrophe"s because of increasing human population and poor land use choices. Magnitude-frequency relationship: the larger the event the larger the recurrence interval (bigger events occur less often)
