Where do most volcanoes occur on Earth’s surface? Most volcanoes occur along diverging plate boundaries, such as the mid-ocean ridge, or in subduction zones around the edges of oceans.
Why would an explosive volcano most likely occur?
Answer and Explanation: An explosive volcanic eruption would most likely occur along the Ring of Fire, a location of increased seismic and volcanic activity surrounding the
How does explosive eruptions occur?
Explosive eruptions occur where cooler, more viscous magmas (such as andesite) reach the surface. Dissolved gases cannot escape as easily, so pressure may build up until gas explosions blast rock and lava fragments into the air! Lava flows are much more thick and sticky so do not flow downhill as easily.
Which type of volcano will give the most explosive?
Stratovolcanoes are considered the most violent. Mount St. Helens, in Washington state, is a stratovolcano that erupted on May 18, 1980.
Where do most volcanoes and earthquakes occur?
The Ring of Fire, also referred to as the Circum-Pacific Belt, is a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes. The majority of Earth’s volcanoes and earthquakes take place along the Ring of Fire.
What region are most volcanoes located?
Most volcanoes are found along convergent or divergent plate boundaries. The Pacific Ring of Fire is the most geologically active region in the world. Volcanoes such as those that form the islands of Hawaii form over hotspots, which are melting zones above mantle plumes.
Why do explosive volcanic eruptions occur at subduction zones?
Thick layers of sediment may accumulate in the trench, and these and the subducting plate rocks contain water that subduction transports to depth, which at higher temperatures and pressures enables melting to occur and ‘magmas’ to form. The hot buoyant magma rises up to the surface, forming chains of volcanoes.
Which type of volcano would be most likely to erupt violently and do the greatest amount of damage on the surface?
Not surprisingly, supervolcanoes are the most dangerous type of volcano. Supervolcanoes are a fairly new idea in volcanology. The exact cause of supervolcano eruptions is still debated, however, scientists think that a very large magma chamber erupts entirely in one catastrophic explosion.
Which volcano is the least explosive?
Answer and Explanation: Shield volcanoes tend to be the least explosive volcanoes. Most of the material they produce is lava, rather than the more explosive pyroclastic
What happens during an explosive volcanic eruption?
The sudden release of pressure causes the gases in the magma to suddenly froth and create volcanic ash and pumice, which is then ejected through the volcanic vent to create the signature eruption column commonly associated with explosive eruptions.
What are explosive volcanoes called?
A Pelean eruption is associated with explosive outbursts that generate pyroclastic flows, dense mixtures of hot volcanic fragments and gas described in the section Lava, gas, and other hazards. Pelean eruptions are named for the destructive eruption of Mount Pelée on the Caribbean island of Martinique in 1902.
Where is volcanoes least likely to occur?
A hotspot is the third place a volcano can form. This particular type is the least common. Hot spots are when thermal plumes from deep in the Earth rises.
