GLY Topic 14
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Nevado del Ruiz had no previous history of causing lahars
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False
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What kind of volcano is Nevado del Ruiz?
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Stratovolcano
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Volcanoes of what volcanic explosive index can generate lahars?
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any
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Lahars are seldom a danger when tens of kilometers from a volcano
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False
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What volcanic hazard from Nevado del Ruiz was responsible for the loss of life in the village of Armero
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A lahar
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There had been no recent volcanic or seismic activity on Nevado del Ruiz in the months prior to the deadly November 13, 1985 eruption:
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False
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Most of those who died in Armero, Columbia, did so from
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Crushing injuries and burial
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Unfortunately, a volcanic hazards map was not finished prior to the Nevado del Ruiz disaster:
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False
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The Columbian government had no knowledge of the danger of Nevado del Ruiz to surrounding communities:
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False
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How does the loss of life from the Nevado del Ruiz lahar rank in terms of twentieth century volcanic distasters
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Second only to St. Pierre, Martinique
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Local officials in Armero were partially at fault for a lack of evacuation
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True
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The City of Armero was built on
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The floodplain of a river draining from Nevado del Ruiz
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What was the source of water to the Nevado del Ruiz lahar?
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An ice cap
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Do you believe that most large stratovolcanoes in the temperate to high latitudes have permanent snow and/or ice caps?
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Yes
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Nevado del Ruiz is located in the ________ mountains in the country of ________.
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Andes, Columbia
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Which of the following was to blame for the great loss of life in Armero
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All of these
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Why did people settle in the Lagunilla River Valley and Armero?
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All of these
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Swift and efficient disaster response greatly reduced the loss of life in Armero, Columbia, in the days after the disaster
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False
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Why wasn't the volcanic eruption of Nevado del Ruiz detected on the day of Armero's destruction?
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They knew it had erupted
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What relationship does volcanism in the Andes have to plate tectonics?
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The Andes are above a subduction zone
