With its first recorded eruption in approximately 1500 B.C., Mt. Etna in Italy is believed to be the oldest active volcano in the world. Mt. Etna has erupted over 190 times and has the most extensive eruption record in history.Know More
Mt. Etna, one of the largest continental volcanoes, last erupted in 1993, its largest eruption as of May 2014.
A volcano in the Pacific Ocean dubbed Tamu Massif, discovered in 2013, is considered the largest volcano in the world. At 120,000 square miles, Tamu Massif is approximately the size of New Mexico. The volcano is estimated to be 145 million years old.Learn more about Volcanoes
A volcano is a place where molten rock seeps or erupts from beneath the crust. Most volcanoes develop in the oceans, but some occur on land. When the molten rock, which is called lava, erupts with force, large, cone-shaped mountains form, which are also called volcanoes.Full Answer >
The lava from a volcano ranges in temperature from 570 to 2,120 degrees Fahrenheit. In comparison, water boils at 212 F, and a pizza oven is generally 500 to 600 F.Full Answer >
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 is in the ongoing formation of the Hawaiian islands.Full Answer >
An extinct volcano is one that has not erupted in at least 10,000 years and is not expected to erupt in the future, according to Oregon State University. There can be confusion between dormant and extinct volcanoes, but the difference between the two is that a dormant volcano may erupt even if it is in the distant future.Full Answer >