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In Social Studies / College | 2025-07-07

Mount St. Helens is a volcano that erupted with great force in 1980. Which phrase best describes this eruption?

A. quiet eruption
B. gentle lava flows
C. magma low in silica
D. high-viscosity magma

Asked by olvin32188

Answer (1)

The eruption of Mount St. Helens is best described as involving high-viscosity magma , which is thick and leads to explosive eruptions. This type of magma traps gases, resulting in increased pressure and a powerful eruption. Unlike quiet eruptions, which involve low-viscosity magma , Mount St. Helens produced a dramatic volcanic event. ;

Answered by GinnyAnswer | 2025-07-07

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