volcano 2 answers

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where do most volcanoes erupt

Along divergent plate boundaries

magma contains _____ gases, including carbon dioxide and sulfur dioxide

dissolved

magma that is rich in gases will form a volcano that

erupts explosively

T or F: a caldera is a large volcano that forms at a divergent plate boundary

false

True or False? the ring of fire is a group of hawaiian shield volcaones

false

volcanoes form when magma

flows through the crust

a ____ is not associated with any plate boundary

hot spot

T or F: a cinder cone volcano is a small volcano with steep sides

true

T or F: composite volcanoes often form at convergent plate boundaries

true

Viscosity is a liquid's resistance to flow.

true

Volcanos that are not associated with plate boundaries are called hot spots

true

mount shasta

most likely to erupt

eruption style depends on the magma's viscosity and the

amount of dissolved gases in the magma

a ____ is small and steep- sided and it erupts basaltic lava

cinder cone volcano

a ____ is large, steep-sided, occurs along convergent plate boundaries and results from explosive eruptions

composite volcano

____ is molten rock that flows along Earth's surface

lava

lassen peak

least likely to erupt

mount baker

least likely to erupt

____ is present beneath Earth's surface

magma

Mount St. Helens

most likely to erupt

glacier peak

most likely to erupt

a fast moving cloud of hot gas, ash, and rock from an erupting volcano is a

pyroclastic flow

___ volcanoes have gentle slopes of basaltic lava; they are commonly located along divergent boundaries and ocean hot spots

shield

a large volcano with gentle slopes

shield volcano

volcanoes form along convergent boundaries as a result of

subduction and rising magma

which is NOT a volcanic hazard

subduction of tectonic plates at a boundary

magmas resistance to flow is called its

viscosity

when magma erupts explosively, it can send particles of rock and glass or _____ into the air

volcanic ash

molten rocks erupt form a

volcano


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