GEOL105 Midterm: Geology Study Guide
8 Mar 2017
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Document Summary
The relationship between hazards and population: once the population interferes with the natural processes, process and change becomes a hazard. More disasters are becoming catastrophes: the number of disasters are increasing due to the increased population. The growth population and location has not been evenly distributed (mostly occurring in the eastern hemisphere). The frequency magnitude relationship: the larger the event the larger the recurrence interval. Concept of mitigation: the elimination or reduction of the frequency, magnitude, or severity of exposure to risks, or minimization of the potential impact of a threat or warning. Concepts of forecasting and prediction: forecasting is the likelihood of something happening and a prediction is when and where something will happen. The most common elements in earth"s crust: silicon (27%) and oxygen (46%) Earth"s internal energy source: comes from uplift (mountain building), formation of continents and oceans basins, earthquakes and volcanoes. Earth"s sources of heat: internal heat comes from radioactive decay and from internal energy sources.
