Quiz on eruptions and explosions

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Which of these explosions is not volcanic in origin?

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What does the Volcanic Explosivity Index (VEI) measure?

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What is the term for a fast-moving current of hot gas and volcanic matter?

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What type of volcano is most likely to produce explosive eruptions?

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What is the main factor that determines whether a volcanic eruption will be explosive or effusive?

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Which volcanic eruption was one of the most powerful in recorded history, occurring in 1815?

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Which U.S. volcano famously erupted in 1980, causing massive destruction?

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What gas is most commonly released during a volcanic eruption?

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Quiz on eruptions and explosions
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