The molten mixture of rock forming substances, gases and water from the mantle.
A long tube through which magma moves from the magma chamber to earths surface
A weak spot in the crust where magma has come to the surface
The resistance of a liquid to flowing.
Liquid magma that reaches the surface; also the rock formed when liquid lava hardens
The opening through which molten rock and gas leave a volcano
A material found in magma that is formed from the elements oxygen and silicon
Describes a volcano that is not currently active, but that may become active in the future
A mass of rock formed when a large body of magma cools inside the crust
Describes a volcano that is no longer active and is unlikely to erupt again.
composite, cinder-cone, shield
Parts of volcanoes
vent, pipe crater, side vent, magma chamber
A fountain of water and stream that builds up pressure underground and erupts at regular intervals.
A string of islands formed by volcanoes along a deep-ocean trench
a slab of volcanic rock formed when magma forces itself across rock layers
A slab of volcanic rock formed when magma squeezes between layers of rock
The large hole at the top of a volcano formed when the roof of a volcano's magma chamber collapses
Ring of Fire
A major belt of volcanoes that rims the Pacific Ocean