What is a Volcano
A vent or opening in Earth's crust through which magma, gases, and ash erupt.
What is a volcano?
Molten rock stored in Earth's crust.
What is magma?
The three main types of volcanoes based on their shape and eruption style
What are shield volcanoes, stratovolcanoes and cinder cone volcanoes
Where most volcanos form.
What is a convergent plate boundary?
A volcano that occurs due to ocean to ocean convergence. EX: Japan
What is an island arc volcano?
A volcanic mudflow
what is a lahar?
Composition factors of magma that influence the type of eruption.
What is viscosity and gas content?
A small steep volcano only about 300 meters high.
What is a cinder cone?
A volcanic location that can occur in the middle of a tectonic plate.
What is a hotspot?
The island arc volcanos of Alaska
What are the Aleutian Islands?
The main components of a volcano's structure.
What is a magma chamber, vent and crater?
Viscosity is affected by this element.
What is silica or silicon dioxide.
Made of alternating layers of pyroclastic material and lava flows. Has the most violent eruptions
What is a stratovolcano or composite volcano
A highly volcanic area around the pacific plate where about 75% of active volcanoes are located.
What is the Ring of Fire?
An intraplate volcano. EX: Hawaiian Islands
What is a hotspot?
solid rock, dust and glass particles ejected from a volcano.
what is pyroclastic debris?
Type of lava that has the highest silica percentage.
Granitic / Rhyolitic
Largest of the volcanoes with a gently sloping mound, composed mainly of basaltic lava flows
What is a shield volcano?
The type of convergent plate boundary that surrounds the Pacific Plate.
What is a subduction zone?
Spreading centers that develop within continents
What is a rift volcano or a rift valley
The Roman god of fire.
What is Vulcan?
Eruptions that have short explosions and gas mixed with magma
what is a Strombolian eruption?
When very thick lava erupts through a volcanic vent and piles up around it.
What is a lava dome?
The outermost layer that consists of the crust and part of the mantle.
What is the lithosphere?
Created when oceanic crust subducts under continental crust.
What is a mountain arc?