Types of Volcanoes Volcanic Eruptions Volcanic Records Volcanologists Puzzles   About the Authors Bibolography Glossary

Caldera: a pit with steep sides at the top of the volcano that has a diameter at least three times its depth.

Cinder Cone: a volcano made mostly of cinders and other things that were thrown into the air.

Cinders: small volcanic bombs only a few centimeters in size.

Composite Volcano: a volcano built of alternating layers of rock and lava.

Crater: a pit at the top of a volcano whose diameter is less than three times its depth volcanic eruption: the time when a volcano spurts forth lava, ash, and rock.

Explosion: a type of eruption, taking place when the cap of dried lava blows off the volcano, releasing pressure and creating an explosion.

Lava: magma after hitting the surface lithosphere: the layer in between the magma and the crust which contains the plates.

Magma: lava before it hits air.

Magma Chamber: the chamber in which magma is stored before erupting pillow lava: lava that cools in water and resumes a fluffy, pillowy shape.

Sheild Volcano: a volcano made up of quiet lava flows volcanic bombs: rocks that are more than 5 mm that are thrown into the air by a volcanic eruption volcanologist: a scientist who studys all aspects of volcanos.

Volcano: a large mountain built up from lava, ash, and rocks which emits lava when the lithosphere's plates move about Hawaiian:a type of eruption in which large amounts of runny lava erupt and produce large, low volcanoes.

Peleean:a type of eruption in which a burning cloud of ash and gas follows blocks of thick, sticky lava.

Strombolian: a type of eruption in which small sticky lava bombs and blocks, ash, gas and, glowing cinders erupt.

Vulcaian:a type of eruption in which violent explosions shoot out very thick lava and large lava bombs. plinian: a type of eruption in which large amounts of runny lava erupt and produce large, low volcanoes.

Submarine Volcanoes: a under water volcano .