what is a volcano

We have looked all around the web to find the most relevant answer to your query: 

what is a volcano

• rupture in the crust of planetary-mass object, such as Earth, that allows hot lava ..... The planet may have had major global resurfacing event about 500 million years ago, from scientists can tell from the density of impact ...

• mountain with hole where lava (hot, liquid rock) comes from ... Shield volcanoes can produce huge areas of basalt, which usually lava ...

• volcanic eruption occurs when hot materials are thrown out of . ... The volcanic explosivity index (commonly shortened VEI) scale, from 0 to 8, ...

If you can not able to find the answer following text may help you

• Plate tectonics map with locations indicated with red circles. Volcanism the phenomenon of eruption of molten rock (magma) onto the surface of the Earth or solid-surface planet or moon, .... Jump up ^ "Cooling Planets: Some Background: volcanism?" (PDF). The Lunar and Planetary Institute, Department ...
• The crater in Santa Ana , El Salvador. volcanic crater roughly circular depression in the ground caused by volcanic activity. ... links here · Related changes · Upload file · Special pages · Permanent link · Page information ...
• Several types of volcanic eruptions—during which lava, tephra and assorted gases are ... The volcanic explosivity index (commonly shortened to VEI) scale, from 0 to 8, for measuring the strength of eruptions. It used by the .... Vulcanian eruptions are type of volcanic eruption, named after the Vulcano.
• Volcanology (also spelled vulcanology) the study of volcanoes, lava, magma, and related ... volcanologist geologist who studies the eruptive activity and formation of volcanoes, and their current and historic eruptions. ... This painting has been interpreted as depiction of an erupting , with cluster of houses ...
• Krakatoa, or Krakatau (Indonesian: Krakatau), volcanic island situated in the Sunda Strait .... now the narrow east end of the Sunda Strait; or it may be mistaken .... new island rose above the waterline few days later.
• Magma mixture of molten or semi-molten rock, volatiles and solids that found beneath the ... Magma often collects in magma chambers that may feed or solidify underground to form an intrusion. Magma capable of ... The degree of partial melting critical for determining type of magma produced.
• The Volcanic Explosivity Index (VEI) relative measure of the explosiveness of volcanic ... an eruption dependent on how much volcanic material thrown out , to height, and how long the eruption lasts. ... Laach Lake (c.

If you want to answer this question or elaborate it, just do it with below below format in comment box:

@Answer@YourDisplayName@ 

We will ensure your response will help others.