a weak spot in the crust where magma has concerned the surface.

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magmathe molten absent from the mantle which has not reached the surface
lavaliquid magma that reaches the surface.
Ring of FireA major belt that volcanoes the rims the Pacific Ocean.

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island arcA string of islands developed by the volcanoes follow me a deep-ocean trench.
hot spotan area whereby magma from deep in ~ the mantle melts v the crust over it
magma chamberthe pocket beneath a volcano wherein magma collects
pipea long tube v which magma move from the magma room to Earth's surface
ventthe opening v which molten rock and also gas leave a volcano
lava flowthe area extended by lava as it pours out of a volcano's vent
cratera bowl-shaped area the forms about a volcano's main opening
silicaa material uncovered in magma the is developed from the aspects oxygen and also silicon
pyroclastic flowthe expulsion of ash, cinders, bombs and gases during an explosive volcanic eruption
dormantdescribes a volcano that is not right now active, however that might become active in the future
extinctdescribes a volcano the is no longer active and is unlikely to erupt again
geysera spring of water and heavy steam that builds up pressure underground and erupts at consistent intervals
shield volcanoa wide, gently sloping mountain made of great of lava and also formed by quiet eruptions
cinder conea steep, cone-shaped hill of little mountain make of volcanic ash, cinders, and bombs piled up approximately a volcano's opening
composite volcanoa tall cone-shaped hill in which layers the lava alternative with class of ash and also other volcano materials
calderathe big hole in ~ the peak of a volcano vormed as soon as the roof that a volcano's magma room collapses
volcanic necka deposit of hardened magma in a volcano's pipe
dikea slab of volcano rock developed when magma pressures itself throughout rock class (a magma intrusion!)
silla slab of volcanic rock developed when magma squeezes in between LAYERS the rock
intrusionan igneous absent layer developed when magma hardens Earth's surface
batholitha massive of rock formed when a huge body that magma cools inside the crust
basina broad, bowl-shaped valley formed where the tardy is bending downward
Central Valleythe huge basin in California between the coastline Ranges and the Sierra Nevada
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