Phreatomagmatic eruptions are ____________.
A) explosive (pyroclastic)
B) effusive (dominated by lava flows)
Correct Answer:
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Q28: Iceland rises above the Atlantic Ocean as
Q29: Which national park is home to a
Q30: Phreatomagmatic eruptions take place when _.
A)volatiles effervesce
Q31: Explosive or voluminous eruptions may cause the
Q32: Hawaiian-style effusive eruptions are a greater threat
Q34: All volcanic eruptions pass through the crater
Q36: Nonviolent eruptions characterized by extensive flows of
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
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