Volcanoes that have not erupted for decades or centuries may cause the greatest volcanic threat to people and their surrounding areas.
Dormant Volcano
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thief
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The simplest, most common type of volcano. It is built almost entirely of loose fragments called cinders and has a narrow base and a very steep slope.
Cinder Cone Volcano
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An opening in the earth's crust through which lava, volcanic ash, and gases escape.
Volcano
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Molten rock below the surface of the Earth that rises in volcanic vents.
Magma
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seesaw
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seesaw
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shark
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The very hot, very dense center of our planet.
Core
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gift
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shark
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Are huge, gently sloped volcanoes that almost exclusively erupts basaltic lava and include some of the largest volcanoes in the world.
Shield Volcano
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Some of the most powerful and destructive volcanoes in human history. Are composed of alternating layers of lava and cinders.
Composite Volcano or Stratovolcano
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A volcano is considered active if it is currently erupting or showing regular signs of activity like earthquake activities and significant gas emissions.
Active Volcano
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A molten rock emerging as a liquid onto Earth's surface.
Lava
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It has no record of volcanic eruptions in the past thousand years.