The pocket beneath a volcano where magma collects.
A long tube through which magma moves from the magma chamber to Earth's surface.
The opening through which molten rock and gas leave a volcano.
The area covered by lava as it pours out of a volcano's vent.
A bowl-shaped area that forms around a volcano's central opening.
A material found in magma that is formed from the elements oxygen and silicon; it is the primary substance of Earth's crust and mantle.
The flow of ash, cinders, bombs and gases down the side of a volcano during an explosive eruption.
Not currently active but able to become active in the future.
Term used to descibe a volcano that is no longer active and unlikely to erupt again.