An opening in the earth's crust/surface which allows hot molten rock, ash or gases, (all together known as Lava) to escape and spread over adjacent areas causing or resulting in heavy damages.

Molten rock or magma which flows out from the interior of the earth Through the crater (opening) of a volcano.

The molten material which exists below the solid rock on the earth's crustwhich sometimes changes from a volcano as Lava.

The funnel shaped hollow opening through which the Lava is ejected.

Generally found where tectonic plates either pull apart or come together.

A location on the earth's surface that has experienced active volcanism for considerable or long period of time.

Fragments of hot rock and splattering Lava.

Generally named after famous volcanoes characterised by their eruption pattern, interval, sequence etc., They are

1. Strambolian
2. Vesuvian
3. Palean
4. Hawaiian
5. Phreatic    and
6. Plinian.

Made on the basis of their physical nature of eruption at different Geographical conditions and places. They are

1. Effusive
2. Explosive   and
3. Subglacial.

Characterised by an outpouring of low viscosity lava which has a fairlyvolatile content. A gentle volcanic activity.

An eruption driven by gas including vapour accumulating under great great pressure. Driven by hot rising "magma", as it interacts with the ground water, the pressure increases until it bursts violently. In this, the pyroclastic material may be thrown 20 Km into the atmosphere, throwing almost one lakh tonnes lava per second at several hundred meters per second.

Eruptions that occur under ice or under a glacier causing sudden dangerousfloods, heavy mudflow called LAHARS.

A type of distinctive flat topped steep sided volcano formed when lava erupts through a thick glacier or ice sheet.

Volcanoes extrude huge quantities of basaltic lava that gradually build a wide mountain with a shield like profile. Their lava flows are very hot and fluid, contributing to long flows.

Mauna Loa of Hawai'i islands of USA. It is the world's largest volcanowith an estimated volume of approximately 18000 cubic miles/75000 cubic kilo meters.

Olympus Mons, Mars.

Are tall conical mountains composed of lava flows and other ejecta in alternate layers, the strata that give rise to the name. These are called "Composite volcanoes".

Mount Fuji, Japan; Mount Mayon - Phillippines; Mount Vesuvius - Italy and Mount Stramboly - Italy.

Large volcano that has a large Caldera, and can potentially produce devastation on an enormous, sometimes on a continental scale.

1. Yellow Stone Caldera, Yellow Stone National Park, US 2. Lake Tanpo, Newzealand. 3. Lake Toba, Sumatra, Indonesia.

Volcanoes on the ocean floor. Normally erupts in shallow areas. Such eruptions may create new islands.

A common eruptive product of submarine volcanoes.

Volcanoes which have erupted in ancient times and are quite now.

Barren Island in the Andamans.

1. Ojos Del Salado, Argentina in the Andes.

2. Gallatiri, Chile in the Andes.

3. Cotopaxi, Ecuador in the Andes.

4. Lascar, Chile in the Andes.

5. Tupu Gatito, Chile in the Andes.

6. Papa Catepati, Mexico.

7. Nevado Del Ruiz, Columbia in the Andes.

8. Sangay, Ecuador in the Andes.
These are active regularly. There are many more which are not regular in eruptions.

1. Archantsky, Kamchatka, Russia.
2. Colima, Mexico.,
3. Mount Etna, Sicily.,
4. Galeras, Columbia.,
5. Mauna Loa, Hawai'i USA.,
6. Merapi, Indonesia.,
7. Nyirgango, DR Congo.,
8. Sakuramajimo, Japan.,
9. Santa Maria, Guatemala.,
10. Santonini, Greece.,
11. Taal, Phillippines.,
12. Teide, Canary Island.,
13. Ulawaun, Papua New Guinea.,
14. Mount Unzen, Japan.,
15. Mount Vesuvius, Italy.

Hundreds of active volcanoes found on the land near the edges of the Pacific Ocean, make up what is called the Ring of Fire. It runs all along the west coast of South and North America, from the southern tip of Chile to Alaska. It also runs down the east coast of Asia, starting in the far north in Kamchataka and extends down past Australia.

Mass of broken rocks or lumps of lava thrown out by a volcano and cemented to form ash.

A hole or vent in the ground in the volcanic regions through which fumes or gases escape.

Volcanology.

A dark volcanic fine grained rock which often occurs in sheets of great thickness formed by solidification of Lava. It is common type of volcanic rock.

A form of decaying volcanic activity in which masses of water thrown out of a tube like hole in the Earth, often to a great height like a hot spring of water.

Arsia Mons, Ascaraeus Mons, Hectes Tholus, Pavonis Mons.

Jupiter Moon "LO".

The largest volcano and also the highest mountain in Europe. It is on the east coast of Sicily (an island). It is also called MONGIBELLO.

Anto Falla, Argentina - 6450 meters.

Andes, South America.

Brunei.

Cotopaxi in Ecuador.

Mexico.

Tanzania.

Italy - east coast of Sicily.

It is a volcanic field of small and scattered volcanic vents. Short eruptionsat each volcanic vents unlike regular volcanoes that have several eruptions from the same vent over a long period.

1. Mt. Tambora, Indonesia -- April 1815 -- 71000 dead.
2. Mt. Krakatoa -- Indonesia -- 26/27 April 1853 -- 34000 dead. 
3.  Mount Tarawera - Newzealand, in 1886

Scattered volcanic vents, having more than one eruptive events from the same vents unlike monogenetic volcanoes. They occur where there is a high level of magma chamber.

Caldera.

Taal in Luzon Island, Phillippines.

Stramboli, Italy.

Camiguin Province, Phillippines - has 7 volcanoes where as the number of towns in that province is only 5.