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Tephra: Quiz

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Question 1: Tephra mixed in with precipitation can also be acidic and cause ________ and snowfall.
PollutionWater pollutionAcid rainAir pollution

Question 2: Once clasts have fallen to the ground they remain as tephra unless hot enough to fuse together into pyroclastic rock or ________.
BasaltTuffIgnimbriteTrachyte

Question 3: [1] Tephra is typically rhyolitic in composition, as most explosive volcanoes are the product of the more viscous felsic or high silica ________.
Igneous rockMagmaGraniteBasalt







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