A natural disaster is defined asA natural event that causes severe loss of life and property damage.Which continent has had the most casualties from natural disasters over the past 40 years?AsiaHazardous natural events occur most often inBoth underdeveloped and developed countries are impacted by natural disastersThe occurrence of hazards is not related to human interactionfaulseAreas of cities that are subjected to significant natural hazardsshould be used for which of the following?parks and golf coursesWhen people or government agencies try to control the activities of natural events, the common result is which of the following?Our problem with nature is transferred elsewhere to someone else or postponed.An insurance company decides on the cost of a policy for a natural hazard by ____.calculating the cost of the probable loss times the probability of that lossThe costs of catastrophic events continue to increase primarilybecause ____more people are moving into more hazardous areasWhat is the normal relationship between number of a particular type of event and the size of such events?There are many small events, a moderate number of larger events, and few giant events of any given type.Location is one of the criteria used in predicting a natural disastertrueRecurrence IntervalIs the expected time interval between a hazard of a given magnitudeAn area that has been hit by a natural disaster is usually not likely to have another one in the future.faulseWhen is a large event such as a major earthquake not a disaster?when it happens in an area without any peopleEarthquakes can often cause other disasters such as a tsunamior landslidetrueWhen people incur a significant loss from a natural disaster, who is most commonly to blame?The people themselves for choosing to live thereWhat can happen to make a moderate-size event into a large natural disaster?overlapping events that amplify the effectIf you erect a barrier for protection against some natural event, what detrimental effect can follow?It can have detrimental effects on others nearby._____________ are actions taken to reduce or eliminate the effectsof natural events on people and property.MitigationWhat is the difference between a reactive response and an anticipatory response?A reactive response has to do with recovery, while an anticipatory response has to do with preparedness.The emergency phase of the general recovery model following catastrophic eventsIncludes clearing of roads for emergency vehicles and the searchand rescue of victimsMost people do not recognize the signs of imminent catastrophes because these events are infrequent.true___________ involves restrictive zoning and the abandonment and public use of hazardous areasland use planning the commonly accepted hypothesis for the formation of the Earth is the gravitational accretion of a cloud of gas, ice, and solid debris Which of the following was not a source of heat energy in the early years of earth's existence?magnetic energy Which of the following two elements form the basic building block of MOST minerals in the earth’s crust?Si and O.What is the proper sequence of the layers of the earth if they are listed from least dense to most dense? crust, mantle, core What is the difference between the Earth's lithosphere and asthenosphere?Lithosphere is more-rigid; asthenosphere is more-plastic/easily deformed.The earth’s active tectonic plates are composed of the earth’s crust and upper mantle Of the following, which was NOT used by Wegener as evidence to support his theory of continental driftPaleomagnetism of the rock of the ocean floor What was the main reason why Wegener's ideas of continental drift wer refected by many scientists? He could not provide a viable mechanism for movement of the continents. How did sea floor spreading revive Alfred Wegener's ideas about continental drift? Sea floor spreading presented a viable mechanism for moving the continents.Sea floor spreading is a conveyor belt like process whereYoung oceanic crust is formed in the center of ocean basins by magma The driving mechanism thought to provide the power for movement of the lithospheric plates isConvection currents within the mantle powered by heat generated from radioactive decay and the original heat of the earth.Moving away from mid-ocean ridges, the seafloor volcanic rocksBecome progressively olderThe size of our planet is increasing because of plate movementFalse If the Atlantic Ocean floor is getting wider, why is the Earth notbecoming larger?Old ocean floor sinks at subduction zones (trenches). Seafloor spreading was confirmed in the mid-1960s by observing The magnetization of rocks of the ocean floor.Why do many oceanic volcanoes occur as long lines of volcanoes that are active at only one end? The lithosphere moves over a stable hotspot in the mantle. Rift valleys are areas of the Earth where Lithospheric plates diverge.Which is an example of a divergent boundary?mid-ocean ridge Which of the following features develop where plates convergeand one descends into the mantle? A trench When an oceanic plate collides with a continental plate The oceanic plate is subducted under the continental plate. Why does oceanic lithosphere almost always sink beneath continental lithosphere at convergent plate boundaries?Oceanic lithosphere is denser than continental lithosphere. Which of the following would be considered a volcanic arc formed by subduction of oceanic crust beneath oceanic crust (ocean-ocean convergent boundary)Japan. Which best describes Mount St. Helens and the other Cascade volcanoes of the North American northwest? Volcanoes built on a continental margin above a sinking slab of oceanic lithosphere The largest mountain ranges, such as the Himalayas, are formed at Continent-continent convergent boundaries. Which of the following is a true statement about transform boundaries? The relative motion of plates at a transform boundary can cause earthquakes.The San Andreas fault at the boundary between the North American Plate and the Pacific plate is a Transform boundary formed by the two plates sliding past each other.What does plate tectonic theory predict about the distribution of volcanoes and earthquakes? They should occur primarily along plate boundaries.Three settings where volcanoes generally form are subduction zones, hot spots, mid-ocean ridge systemsIn the 1997 movie 'volcano' there is a violent eruption in Los Angeles, California. This is not realistic
View Full Document
Unlocking...