Volcanoes cause physical damage to structures and buildings, wildlife, local vegetation and the atmosphere, as well as posing health risks. Residences within the vicinity of a volcanic eruption often receive timely notice before an eruption occurs. This reduces the likelihood of danger to humans.Know More
Scientific advancements in vulcanology have led scientists to be able to discover signs that indicate when a volcano is about to erupt. This allows the scientists to provide adequate notice to civilians before an eruption occurs, minimizing tragedy to humans.
Even when humans evacuate, however, damage to structures and buildings can occur. Volcanic eruptions throw large amounts of ash. When this ash descends and collects on the rooftops of buildings, the likelihood of the roofs collapsing increases. Because this ash is comprised of fine glass particles and is toxic, when it is breathed in, humans and animals in the immediate vicinity often experience respiratory problems.
Lava flowing from the center of the volcano causes a fire danger to wildlife and plants in the area, with the effects often felt for many miles around. Lava and fallen ash also destroy plant life by smothering it. Volcanic eruptions are also sometimes responsible for triggering tsunamis and electrical storms within areas surrounding the eruption.Learn more in Volcanoes
Active volcanoes are dangerous for a number of reasons, including their tendency to erupt and send poisonous gas and choking ash across wide areas. Even when they aren't erupting, volcanoes can potentially cause major landslides and sudden mudflows.Full Answer >
Volcanoes occur when magma from the earth's mantle reaches the surface. This can happen at the place where two tectonic plates diverge or converge. It can also occur in a place called a hotspot, in which magma from the mantle reaches the surface in the middle of a tectonic plate.Full Answer >
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 >
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.Full Answer >