Active volcanoes are those that have erupted recently or regularly erupt, and inactive volcanoes are those that have not erupted for a long time. The exact time distinction between active and inactive volcanoes differs between experts.Continue Reading
Currently active volcanoes are volcanoes that are erupting presently, and there are almost always some erupting throughout the world. Active volcanoes are expected to erupt in the near future on a relatively regular schedule. Some people consider volcanoes active if they have erupted in the past 100 years, but others do not classify a volcano as inactive or dormant until hundreds or thousands of years have passed.
Dormant and inactive are often used interchangeably, but they have subtle differences. Dormant volcanoes are expected, and have the ability, to erupt in the future. They may have a long cycle between eruptions during which they are dormant. Inactive volcanoes are usually not expected to erupt in the future and have not erupted in recent history.
Dormant and inactive volcanoes can become extinct after many years. This happens when a volcano moves away from its magma source or its source becomes empty. The shifting of tectonic plates can move volcanoes away from the source, which results in extinct volcanoes that have no chance of erupting.Learn more about Volcanoes
Names of some of the world's most famous volcanoes include Mount Vesuvius, Krakatoa, Mount St. Helens and Mount Tambora. While some of these volcanoes are known to be dangerous, as of 2015 some have not been active for over 100 years.Full Answer >
There are more than 550 active volcanoes in the world, almost all of which are located at convergent tectonic plate boundaries. This includes all of the volcanoes in the Pacific Ring of Fire, such as Japan's Mount Fuji, as well as Mount Saint Helens, Popocafepetl in Mexico and Azul in the Andes Range.Full Answer >
Plate boundaries are the weakest points in the Earth's crust, which leads to cracks that allow magma to seep through and develop volcanoes, according to NEWTON. These areas are called "subduction zones." Subduction zones form the Ring of Fire, a volcanic region in the Pacific Ocean, explains Live Science.Full Answer >
Cinder cone volcanoes generally spew lava dramatically when they erupt, though the eruptions are not particularly dangerous to human populations. Dramatic and beautiful as the eruptions may be, they are quite insignificant in comparison to the eruptions of other types of volcanoes.Full Answer >