Extrusive Volcanoes
Volcanoes are made of this type of rock.
What is igneous?
Vertical is to to dike as horizontal is to this.
What is sill?
This is a layer of loose pyroclastic material and ash that cover the ground around a volcano?
What is tephra?
This area of the world is known for having the most volcanoes.
What is the Pacific ring/Ring of Fire?
This is what we call magma that reaches the earth's surface.
What is lava?
This volcano emits mostly cinder, ash, and bombs.
What is a cindercone?
This is the largest type of intrusive igneous feature?
What is a batholith?
This is what the viscosity of lava depends on.
What is silica content?
This is where intrusive volcanoes are found.
What is under the ground?
What is a shield volcano?
This is the most common type of volcano.
What is stratovolcano?
Batholiths and laccoliths are both types of this.
What are plutons?
This is a rapid downhill movement of hot, solid, volcanic particles suspended in steam.
What is pyroclastic flow?
This is the hottest part of the earth.
What is the core of the planet?
This volcano emits lava and solid debris in alternately quiet and explosive explosions.
Mineral terraces are often associated with these geologic formations.
What are geysers?
This is the rate at which temperature changes with depth underground.
What is geothermal gradient?
This is a list of volcanic emissions listed from smallest to largest.
What is ash, cinder, and bomb?
This volcano takes up the most land area of all volcanoes.
What is a shield volcano?
This is a depositional mountain build up by molten rock that has risen to the earths' surface through a vent.
What is a volcano?
This is the most recognizable feature of a volcano.
What is a caldera?
This is a wall-like igneous intrusion.
What is a dike?
This is a slow moving lava that have rough broken surfaces with sharp pieces of rock pointing out.
What is 'a'a?
This geologic feature is where most active volcanoes in the world exist.
What is near convergent tectonic plate boundaries?
Many more deaths occur from volcanic eruptions due to this, than from flowing lava.
What is pyroclastic flow?