Almost all of the 25,000 people killed in the 1985 eruption of Nevada del Ruiz in Columbia were killed by
A) a very thick volcanic ash fall.
B) a large mudflow of volcanic debris.
C) a fast-moving lava flow.
D) collapse of a volcanic caldera.
Correct Answer:
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Q23: Small vents on volcanoes that emit gas
Q24: The Cascade volcanoes are associated with a
A)convergent
Q25: Metal-rich minerals precipitate out of hydrothermal vents
Q26: What types of lavas are erupted at
Q27: Approximately how much basaltic lava is erupted
Q29: Shiprock,New Mexico,is an example of a
A)caldera.
B)cinder cone.
C)diatreme.
D)lava
Q30: Which of the following gases is the
Q31: The eruption of vast quantities of superheated
Q32: Which of the following volcanic gases emitted
Q33: What type of volcanic gases form aerosols
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