Types of Volcanoes
This volcano has gently sloping sides.
What is a shield volcano?
This is the point where the magma leaves the volcano's pipe.
What is the vent?
This is molten rock above ground.
What is lava?
This is what forms when magma hardens in a volcanic pipe.
What is a volcanic neck?
The belt of volcanoes in the Pacific Ocean
What is the Ring of Fire?
This type of volcano has layers of ash and lava.
What is a composite volcano?
This is the narrow tube that rises from the magma chamber to the vent.
What is the pipe?
This is molten rock below ground?
What is magma?
This is when magma squeezes between relatively horizontal layers of rock.
What is a sill?
Oceanic-Oceanic and Continental-Oceanic are two forms of this
What are Convergent Boundary Volcanism?
This type of volcano is a very steep cone shaped hill or mountain.
What is a cinder cone volcano?
This is the large area underground where the magma is held.
What is the magma chamber?
This material changes the thickness of lava.
What is silica?
This is when magma forces itself into a vertical crack and hardens.
What is a dike?
The Great Rift Valley and Mount Kilimanjaro are two examples of this.
Divergent Boundary Volcanism?
This is a high level area formed by rising underground lava.
What is a lava plateau?
This is the bowl shaped area that forms around the volcano's vent.
What is the crater?
This is fast moving ropelike hot lava.
What is pahoehoe?
This is a mass of rock that forms when a large body of magma cools inside the cust.
What is a batholith?
Hawaii was formed by this
What is a hotspot?
This is a hole left by the collapse of a volcanic mountain.
What is a caldera?
Lava flows, volcanic ash, pyroclastic flows, and mudflows
What are volcano hazards?
This is cooler and slower moving jagged lava.
What is aa?
A crack or fissure that develops in the crust as magma is forced toward the surface
What is a volcano?
As water content is increased, the melting point is decreased
What is the relationship between water content and melting point?