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10 cards from this deck
Dangerous effects from volcanic activity
Hot gases/ash/material flowing rapidly down volcano
Mudflows of pyroclastic material mixed with water
Scale 0-8 measuring eruption explosiveness
Constructive margins, subduction zones, hot spots
Frequent but relatively gentle (effusive)
75% world's volcanoes, 90% earthquakes
Away from plate boundaries, fairly stationary
Low = effusive (gentle), high = explosive
Each step = 10x more tephra ejected
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