Volcanoes
What type of mountain landform is a volcano?
What is depositional
runny lava that dries smooth
What is pahoehoe lava
This lava dries jagged
What is A'a
formed by quiet eruptions.
What is a shield volcano?
What is viscosity?
What is a liquid's resistance to flow
Forms most volcanoes in the world
What is subduction
Vertical, wall-like intrusions
What are dikes
layers of pyroclastic material covering the groud
What is tephra
Layered cone of lava and pyroclastic material
What is a stratovolcano
Fumerole
What is a vent in the ground where steam and CO2 escape
What are the 2 major volcano belts in the world?
What is the Alpine Himalayan and the Circum Pacific
The largest pluton
What is a batholith
What is the difference between an extinct and a dormant volcano?
What is a dormant volcano may erupt in the future but is not currently alive ( seismic activity) while an extinct volcano will probably never erupt again (magma chamber eroded)
Formed from a violent, volcanic explosion that often destroys the mountain
What is a caldera
a type of explosive eruption that hurls out a mixture of hot gases, water vapor, and ash.
What is pyroclastic flow?
What makes magma viscous?
What is the amount of silica
What is basaltic, andesitic, and rhyolitic
3 pieces of evidence that a volcano is still active
What are currently erupting, seismic activity, nearby fumeroles or hot springs
type of volcanism that happens underground
What is intrusive volcanism
A volcanic mudslide
What is a lahar
formed during explosive eruptions when gases in the magma expand
What is ash
Largest eruption ever observed
What is Mt. Tambora
World's largest volcano
What is Mauna Loa
the continuous, geothermally driven flow of water up and down through the crust
what is a hydrothermal circuit