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 about Volcanoes
The three main types of volcanoes are composite, shield and cinder cone volcanoes. Each type of volcano is formed a different way and possesses specific characteristics indicative of its type.Full Answer >
Pyroclastic flows are enormous ejections of debris from erupting volcanoes. They consist of large rocks and smaller particles of ash and dust that travel across the surrounding landscape at tremendous velocity.Full Answer >
Shield volcanoes form in areas where low viscosity magma comes to the surface as fast-flowing lava. The lava travels farther than other types of lava, and the steady build-up caused by this type of magma creates the softer sides seen in shield volcanoes.Full Answer >
Spatter cone volcanoes are created from blobs of lava thrown up from volcanic fissures. These blobs return to earth, pile up and form mounds around a vent. Spatter cones range between 1 and 5 meters high.Full Answer >