QuestionAugust 16, 2025

What can cause the eruption from a shield volcano to become explosive? A) Water accumulated in the vent B) Mantle plumes C) Subduction D) Caldera collapse

What can cause the eruption from a shield volcano to become explosive? A) Water accumulated in the vent B) Mantle plumes C) Subduction D) Caldera collapse
What can cause the eruption from a shield volcano to become explosive? A) Water accumulated in the vent B) Mantle plumes C) Subduction D) Caldera collapse

Solution
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Answer

A) Water accumulated in the vent Explanation 1. Identify the nature of shield volcanoes Shield volcanoes typically have low-viscosity lava, leading to non-explosive eruptions. 2. Analyze options for explosive potential A) Water accumulated in the vent can increase pressure and cause explosive eruptions. B) Mantle plumes are associated with hotspot volcanism, not directly causing explosiveness. C) Subduction zones are more related to stratovolcanoes, not shield volcanoes. D) Caldera collapse is a result of an eruption, not a cause.

Explanation

1. Identify the nature of shield volcanoes<br /> Shield volcanoes typically have low-viscosity lava, leading to non-explosive eruptions.<br /><br />2. Analyze options for explosive potential<br /> A) Water accumulated in the vent can increase pressure and cause explosive eruptions.<br /> B) Mantle plumes are associated with hotspot volcanism, not directly causing explosiveness.<br /> C) Subduction zones are more related to stratovolcanoes, not shield volcanoes.<br /> D) Caldera collapse is a result of an eruption, not a cause.
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