VOLCANOS

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Magma Chamber

Magma that collects in a pocket of the volcano
Pipe

a long tube in the ground that connects the magma chamber to the surface
vent

molten rock and gas leave a volcano through an opening
Lava flow

is the area covered by lava as it pours out of the vent
crater

is a bowl shaped area that may form at the top of volcano
Pyroclastic Flow

Occurs when sn explosive eruption hurls out a mixture of gas ash cinders and bombs
dormant

a volcano that will awaken in the future and become active.
extinct

dead volcano unlikely to erupt again
Shield Volcano

a volcano that is gently sloping mountain lava flows build it wide
Cinder cone volcano

Steep cone shape hill or small mountain called a
composite volcano

are tall cone shaped mountains with layers of ash
caldera

a huge hole left by a collapse of volcano mountains
volcanic neck

looks like a giant tooth stuck in the ground and forms when magma hards in a volcanic pipe
dike

magma that forces it self across rock layers and hardens into a dike
sill

When magma squeezes between horizontal layers of rock. it forms sill
batholith

large rock masses called form the core of mountain ranges. and a large body of magma cools in it
geothermal energy

magma a few kilometers beneath earth surface and heats underground water
geyser

is a fountain of water and steam and that erupts from the ground