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A hot, high-velocity mixture of ash, gas and fragmented rock that flows like a liquid down slopes and over terrain.
A low, flat, gently sloping volcano built from many flows of low-viscosity basaltic lava.
Cinder Cone Volcano
A steep, cone-shaped hill or small mountain made of volcanic ash, cinders, and bombs piled up around a volcano's opening
A tall, cone-shaped hill in which layers of high silica lava alternate with layers rock fragments.
A large crater caused by the violent explosion of a volcano that collapses into a depression
A pool formed by groundwater that has risen to the surface after being heated by a nearby body of magma.
A fountain of water and steam that builds up pressure underground and erupts at regular intervals
A dark, hot, oxygen-deficient environment associated with volcanic activity on or near the seafloor spreading centers.
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