If a Bulge Grows Steep Enough,it May Collapse

question 12

Multiple Choice

If a bulge grows steep enough,it may collapse.Explain how this can trigger an explosive eruption.

• A) It removes the cover over the magma, so it can escape.
• B) It slices through some of the gas bubbles, making them pop.
• C) It doesn't trigger an explosive eruption; it does, however, create a devastating landslide.
• D) The friction of the landslide heats that part of the magma, so the dissolved water flashes into steam.
• E) It decreases pressure on gases dissolved in the magma, permitting them to expand.

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