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Brechbill Volcanoes

Molten rock above the earth's crust lava
Molten rock inside the earth magma
Fragments of rock and lava that are spewed during an eruption tephra
Explosion of hot gas and rock that plow down the side of a volcano after an eruption pyroclastic cloud
Gaseous, magma-filled cavity beneath earth's surface magma chamber
Largest volcanoes shield volcano
Volcanoes with low viscous, fast moving lava shield volcano
Kilauea and Mauna Loa are examples of a ______. shield volcano
Most violent type of volcano composite volcano
Composite volcanoes are also known as ___. stratovolcanoes
Type of volcano with highly viscous, slow moving lava that explodes with lots of debris composite volcano
An example of a composite volcano that erupted in Pompeii, Italy in 79 AD. Vesuvius
Most common and simplest type of volcano with low viscous lava and glassy rock fragments cinder cone
Rare volcano found at the tops of larger volcanoes lava dome
The thickness of lava and magma determined by silica and gas content and temperature. viscosity
An area in the mantle where heat rises in the form of a thermal plume, creating islands. hotspot
Most dangerous volcanoes occur at a ________ plate boundary. subducting
_______ boundaries are where magma pushes between the plates as the plates move apart. divergent
The ________ is a region of high volcanic and seismic activity surrounding the Pacific plate. Ring of Fire
Which moves: the island or the hotspot? the island
A _________ is a scientist that studies volcanoes. volcanologist
The long tube in the ground that connects the magma chamber to the surface is called the ____. pipe
When groundwater is heated by magma and collects in a natural pool it is called a ____. hotspring
What is responsible for making magma erupt to the surface? trapped gases
A volcano that is not predicted to ever erupt again. extinct
A volcano that is sleeping and may erupt in the future. dormant
A volcano that is erupting or expected to erupt in the near future. active
The main hazard from a quiet eruption is ____. lava flows
cooler, slower moving, pillow-like lava. pahoehoe
fast moving, jagged lava Aa
The magma's viscosity is most directly related to the ____ content. silica
Mudflow due to the rapid melting of snow during a volcanic eruption. lahar
Created by: brechbillc