Volcanoes that have erupted within the last decade include Bulusan in the Phillippines and Copahue, which is near the border of Chile and Argentina. Some volcanoes, such as Kilauea in Hawaii and Mount Etna in Italy, have been erupting more or less continuously for decad...
When a volcano erupts, magma from beneath the Earth is forced out of the volcano's mouth in the form of molten lava. Large amounts of gases and ash can also be released with the lava, depending on the type of eruption.
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, as it was in the famous eruption of Mt. Vesuvius that destroyed Pompeii, or it can be slow and effusive, as it ...
Volcanoes erupt due to pressure that the weight of the rocks puts on the magma and forces it to the surface out any available vent or exit provided to it. The magma is in a reservoir like area under the surface and the pressure from the rocks causes the less dense magma...
VolcanoDiscovery.com is a website created and maintained by an international group of scientists and volcanologists that provides up-to-date information on current volcanic eruptions around the world. The Smithsonian's Global Volcanism Program also publishes regular eru...
A volcanic eruption is caused by the injection of magma into a full magma chamber, the buoyancy of magma and the pressure exerted by the gases in the magma. The volcano simply acts as an opening through which magma and dissolved gases are discharged.
The first volcano erupted approximately 4.5 billion years ago. This is when the earth first came into existence, and long before the first humans walked the earth, according to Scholastic, Inc.
Some volcanoes erupt often and some are inactive for long periods of time. The amount of time between volcanic eruptions depends on the volcano itself, according to the Department of Geosciences at Oregon State University.
Volcanoes erupt to release pressure built up in the magma chamber by expelling the magma as lava. Along with lava, a volcanic eruption releases ash and greenhouse gases such as sulfur dioxide and carbon dioxide.
According to the Global Volcanism Program at the Smithsonian Institution, as of December 2014, there have been a little over 400 confirmed eruptions in the world since January 2004. These eruptions range on the Volcanic Explosivity Index, or VEI, from 0 up to 5. A VEI o...