Question

This volcano that erupted in 1980 is regarded as the worst one in the history of United States. The eruption showed 5.1 on the Richter Scale, which led to the collapse of the north side of the mountain and resulted in a great amount of avalanche debris.​

Answer 1

Explanation:

mount name -Mount St. Helens

On March 27, 1980, a series of volcanic explosions and pyroclastic flows began at Mount St. Helens in Skamania County, Washington, United States. A series of phreatic blasts occurred from the summit and escalated until a major explosive eruption took place on May 18, 1980.

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