Nonviolent eruptions characterized by extensive flows of basaltic lava are termed ____________.
A) pyroclastic
B) effusive
C) explosive
Correct Answer:
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Q31: Explosive or voluminous eruptions may cause the
Q32: Hawaiian-style effusive eruptions are a greater threat
Q33: Phreatomagmatic eruptions are _.
A)explosive (pyroclastic)
B)effusive (dominated by
Q34: All volcanic eruptions pass through the crater
Q37: Whether an eruption will primarily produce lava
Q38: The Columbia River Plateau is an example
Q38: Hot-spot volcanoes _.
A)can arise from the ocean
Q39: As compared to subaerial basaltic lavas,submarine basaltic
Q40: Of the three primary forms of subaerial
Q41: The eruption of Mt.St.Helens in 1980 was
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