Key words that kids should know to understand volcanic eruptions are: magma, lava, crust, mantle, core and plates. volcano meaning: 1. a mountain with a large, circular hole at the top through which lava (= hot liquid rock) gases…. In simple terms a volcano is a mountain that opens downward to a pool of molten rock (magma) below the surface of the earth.It is a hole in … Definition of volcano in the Definitions.net dictionary. Meaning of volcano. Provide a vocabulary list of important terms. Yet, while eruptions are spectacular to watch, they can cause disastrous loss of life and property, especially in densely populated regions of the world. When a volcano erupts, hot gases and melted rock from deep within Earth find their way up to the surface. Cinder cone volcanoes are impressive for their explosive eruptions and classic looks. Learn more. Of the three types of volcano, the shield is the largest in terms of area. A volcano is an opening in Earth ’s crust. Definition of Shield Volcano. Put simply, a volcano is an opening in the Earth’s surface. Eruptions can come from side branches or from the top of the volcano. Define what a volcano is. Active volcano definition: A volcano is a mountain from which hot melted rock, gas, steam , and ash from inside the... | Meaning, pronunciation, translations and examples What is a Volcano? A volcano is a mountain that has lava (hot, liquid rock) coming out from a magma chamber under the ground, or did have in the past. Some eruptions are terrible explosions that throw out huge amounts of rock and volcanic ash and can kill many people. This material may flow slowly out of a fissure, or crack, in the ground, or it may explode suddenly into the air. See more. The word “volcano” comes from the Roman name “Vulcan”. Usually found in a mountain, the opening allows gas, hot magma and ash to escape from beneath the Earth’s crust.. 2. A volcano is a landform (usually a mountain) where molten rock erupts through the surface of the planet. Learn more. Volcanoes are formed by the movement of tectonic plates.. Volcanic eruptions may be very destructive. Volcano, vent in the crust of Earth or another planet or satellite, from which issue eruptions of molten rock, hot rock fragments, and hot gases.A volcanic eruption is an awesome display of Earth’s power. volcano definition: 1. a mountain with a large, circular hole at the top through which lava (= hot liquid rock) gases…. A volcano can also be classified as an extinct volcano, which means that it is a volcano that is not expected to erupt again. 1. Information and translations of volcano in the most comprehensive dictionary definitions resource on the web. 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