What caused Mount Etna to erupt?

Answer

Etna eruptions have been as result of change in structural stability of magma caused by tectonic movements. As of January 2012, Mount Etna in Italy was Europe's most active volcano. The mountain is 3,295m high.
Q&A Related to "What caused Mount Etna to erupt?"
as with all volcanoes, mt etna is an active volcano so it would've erupted due to the pressure under the ground. that's fundamentally what all volcano's are - ways to release pressure
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---- My geog teacher says its gonna cause massive effect on the world and could send us into a black out or something. :S im not sure. Maybe its Mt Etna, maybe not, im not sure..
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As per infos found here, http://en.wikipedia.org/wiki/Mount_Etna. There are no mention of any castatrophic effects.
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Volcano collapse and tsunami. Hope this helped! =
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1 Additional Answer
Mount Etna is an active stratovolcano in which eruptions are not always the same. Most volcano open downward to a pool of molten rock beneath the earth's surface therefore when pressure piles up, eruptions occur. Gases and rock get discharge through the opening and spill or fill the air with lava fragments. This may be one of the cause of Mount Etna eruptions.
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