Volcano Activity Levels
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Questions and Answers

What are the three categories of volcanoes based on their activity?

extinct, active, and dormant

Which category of volcanoes are easily recognized?

active

Why must people living near known extinct and dormant volcanoes always be on the lookout?

Volcanoes can erupt at any time without warnings

What is the name of the famous active volcano that lies on an island near Italy?

<p>Stromboli</p> Signup and view all the answers

What are inactive volcanoes that have not erupted for an amount of time but can't be called extinct called?

<p>dormant</p> Signup and view all the answers

What event occurred in US history in 1980?

<p>cataclysmic eruption of Mount St. Helens</p> Signup and view all the answers

What is the role of volcanologists?

<p>to study the formation of volcanoes and their eruptions</p> Signup and view all the answers

Who was the foremost volcanologist monitoring Mount St. Helens before its eruption?

<p>David Johnston</p> Signup and view all the answers

What can volcanologists search for to help predict when an eruption might occur?

<p>patterns and clues</p> Signup and view all the answers

When did the explosive eruption of Mount St. Helens happen?

<p>May 18th, 1980 at 8:32 a.m.</p> Signup and view all the answers

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