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Exam 5: Volcanoes and Volcanism

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Question 31

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Why are basalt plateau's elevated?

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The fissure eruption itself doesn't form...

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Question 32

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What was the date of the eruptions that destroyed the Roman cities of Pompeii and Herculaneum?

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Question 33

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Mauna Loa volcano in Hawaii has relatively gentle slopes; Mt. Rainier in Washington is tall, with steeper slopes; Parícutin in Mexico is much smaller, with very steep slopes composed of loose pyroclastic material. Each of these is an example of a different kind of volcano. What kind does each represent? What kind of volcanic activity produced each of these? Why are there different types of volcanos? Explain.

The chemical composition of lava is the same for all volcanoes.

Distinguish and explain the difference between aa and pahoehoe lava.

Prior to the 1980 eruption of Mt. St. Helens, the last eruption of a Cascade Range volcano was that of___________in the years ___________ .

Intermediate and felsic magmas usually arise where

What volcano was responsible for the destruction of Pompeii and Herculaneum?

One common and dangerous gas emitted from volcanoes and responsible for many deaths in Iceland and Camaroon in the past is___________ .

Harmonic tremors are indicative of magma moving beneath the surface and may be significant for forecasts of volcanic activity.

Aa lava is different from pahoehoe lava because

Pyroclastic sheet flows are the result of volcanic eruptions from central vents during periods of especially strong winds.

Why are fissure eruptions associated with basalt plateaus?

___________magma produces shield volcanoes along___________ plate boundaries.

Yellowstone National Park was formed as a result of the eruption of a series of supervolcanoes.

Volcanism occurs along which of the following? The majority of volcanoes occur along