Science Test on Volcanoes
Molten rock, underground.
A weak spot in the crust where magma can escape.
Molten rock, above ground
Ring of Fire
A major volcanic belt, formed by the many volcanoes that rim the pacific ocean.
Fast moving, hot lava, low viscosity. Looks like a solid mass of rope-like coils.
Cooler, slower-moving lava, high viscosity. Rough, jagged surface.
A string of islands formed by the volcanoes along a deep-ocean trench.
Volcano where magma from the mantle melts through the crust.
A liquids resistance to flowing.
A material found in magma. Causes explosive eruptions.
The pocket beneath a volcano where magma collects.
A long tube through which magma moves from the magma chamber to the earth's surface.
Same as pipe.
The area covered by lava as it pours out of a volcano's vent.
The top of a volcano.
Expulsion of ash, cinders, bombs, gasses
A volcano that is not active, but isn't dead yet
The volcano will never erupt again supposedly
Wide, gently sloping, made of lava layers, quiet eruptions
Steep, alternates between quiet and explosive eruptions, made of lava and pyroclastic flow
Cinder Cone Volcano
Steep, explosive eruptions, made out of pyroclastic flow
The large hole at the top of a volcano formed when the roof the magma chamber collapses.
A deposit of hardened magma in a volcano's pipe.
Vertical pathways of magma
Horizontal pathways of magma
A mass of rock formed when a large body of magma cools inside the crust.
A fountain of water and steam that builds up pressure underground and erupts at regular intervals.
When there is a crack in the crust underwater, so that the water is heated
Boiling pot of mud
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