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Volcano:an Earth land feature in which
a mountain like feature develops from the Earths magma that
is forced to the surface.
"About 1,900
volcanoes on Earth are considered active,
meaning they show some level of activity and
are likely to explode again. Many other
volcanoes are dormant, showing no current
signs of exploding but likely to become
active at some point in the future. Others
are considered extinct." Read More
National Geographic
"Volcanoes are grouped into four
types: cinder cones, composite volcanoes,
shield volcanoes and lava volcanoes." Read
More
Weather Wiz Kids
