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Volcano

en.wikipedia.org/wiki/Volcano

A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava ... Erupting volcanoes can pose many hazards, not only in the immediate vicinity of the eruption. ...

Why are there volcanoes? Why do they erupt? | Volcano World ...

volcano.oregonstate.edu/why-are-there-volcanoes

Volcanoes erupt because of density and pressure. The lower density of the magma relative to the surrounding rocks causes it to rise (like air bubbles in syrup).

USGS FAQs - Volcanoes General - How Do Volcanoes Erupt?

www2.usgs.gov/faq/categories/9819/2729

Some volcanic eruptions are explosive and other are not. How explosive an eruption is depends on how runny or sticky the magma is. If magma is thin and ...

How Do Volcanoes Erupt? - Universe Today

www.universetoday.com/31124/how-volcanoes-erupt/

May 26, 2016 ... Volcanic eruptions are driven by a combination of mechanisms, which include pressure and heat in the Earth's mantle, as well as tectonic ...

How It Happens | Volcanic Eruptions - Video - NYTimes.com

www.nytimes.com/video/science/100000003431211/how-it-happens-volcanic-eruptions.html

The eruption of a volcano can be one of the planet's most destructive events — spewing huge amounts of rock, gas and ash that can kill people. Henry Fountain  ...

Explainer: why volcanoes erupt - The Conversation

theconversation.com/explainer-why-volcanoes-erupt-44732

Aug 4, 2015 ... What happens beneath the surface before a volcano erupts? ... Mirzam Abdurrachman does not work for, consult, own shares in or receive ...

Why do volcanoes erupt? What creates eruptions? - eSchooltoday

eschooltoday.com/volcanoes/how-do-volcanoes-erupt.html

Find out what the earth make-up is, and how extreme pressure build up inside the earth forces molten matter to be expelled out to the surface, causing a volcanic ...

Volcanoes - Weather Wiz Kids weather information for kids

www.weatherwizkids.com/weather-volcano.htm

An erupting volcano can trigger tsunamis, flash floods, earthquakes, mudflows and rockfalls. Volcano ... Volcano Why does lava take a long time to cool down?

What causes a volcano erupt?

www.vtaide.com/png/George/volcanoes.htm

A volcano begins as melted rock (magma) which rises from deep inside the earth toward the surface. As the gas-filled magma rises ...

How does a volcano erupt? | Reference.com

www.reference.com/science/volcano-erupt-5e5067d64bdf23fd

A volcano erupts through the build-up and release of pressure, whether that pressure is of its underlying magma, water or both. This release can be explosive , ...

Answers
How Does a Volcano Erupt?
A volcano marks a vent where magma, or molten rock, reaches the Earth’s surface in the form of lava and associated materials. While many people envision a conical peak when they think of a volcano, a wide variety of landforms fall into the... More »
Difficulty: Easy
Source: www.ehow.com