Learning Unit 1: Introduction to Natural Disasters Review QuestionsThis assignment is designed to assess your understanding of Unit 1 and includes some of the Questions for Review at the end of Chapter 1 from your text plus a few additional questions. Each question can be answered in one to two sentences. Please limit yourself to a maximum of three sentences. Access the assignment, complete it with ANSWERS IN A DIFFERENT COLOR FONT as a separate file, and send it back for evaluation and grading through the assignment tab by or before the due date. 1. What are some reasons people live in geologically dangerous areas?For the view, to experience a stream or the beach more closely, fertile land, cheapland.2. Is the geological landscape controlled by gradual and unrelenting processes or intermittent large events with little action in between? Provide an example to illustrate. Intermittent large events: streams run clear most of the year but get muddy and erode their channels during floods.3. Some natural disasters happen when the equilibrium of a system is disrupted. What are some examples?Landslide becomes soaked with water or volcano bulge collapses triggering an eruption.4. Contrast the general nature of catastrophic losses in developed countries versuspoor countries. In developing countries, there are increasing numbers of deaths from natural disasters, whereas in developed countries, there are typically greater economic losses.5. What are the main reasons for the ever-increasing costs of catastrophic events?Overall increase in world population and human migration to more hazardous areas.6. If people should not live in especially dangerous areas, what beneficial use is there for those areas?Parks, natural playing fields, golf courses can be created.7. When is a large event such as a major earthquake not a disaster?When it happens in a remote area and does not affect anyone. 8. When an insurance company decides on the cost of an insurance policy for a natural hazard, what are the two main deciding factors?The probability of an event occurrence (e.g., recurrence interval) and the cost of the probable loss (in dollars) from the event.9. Describe the general relationship between the frequency and magnitude of an event?Magnitude is the size of the event. Frequency is how often it happens. An event with a higher magnitude will not happen as frequently.10. When people or governmental agencies try to restrict or control the activities of nature, what is the general result?The problem is transferred to somewhere else or onto someone else.11. What kind of information must be assembled to make hazard predictions?Identifying the location that the event is likely to happen,determining the probability that an event of a specific magnitude will occur, observing any precursor events12. What is a precursor event?An example of a precursor event is the surface of the ground may creep (move slowly for a long period of time) prior to an actual landslide Volcanoes sometimes swell or bulge before an eruption or an earthquake may occur. 13. Explain how population growth increases the number of disasters.The more people living in one area the more lives there are to be damaged14. What are the stages of disaster recovery?Emergency work: work that must be done immediately to save lives Restoration of services and communication: includes providing temporary shelter and communication Reconstruction: includes getting lives back to normal for everyone15. Provide 3 methods of hazard mitigation.Hazard mitigation plans can address a range of natural and human-caused hazards. They typically include key elements: 1) a risk assessment, 2) capability assessment, and 3) mitigation
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