The volcanic explosivity index quantifies the energy of a volcanic eruption.
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Q13: The Columbia River basalts and the plateau
Q14: Harmonic tremors are indicative of magma moving
Q15: Pyroclastic sheet flows are the result of
Q16: The circum-Pacific belt of volcanoes is related
Q17: The distribution of active volcanoes is random.
Q19: Which of the following statements most accurately
Q20: An extinct volcano is one which
A) existed
Q21: Aa lava is different from pahoehoe lava
Q22: The type of volcano that forms over
Q23: Composite volcanoes form from
A) intermediate or andesitic
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