Types of Volcanoes
The largest volcano, covering large amounts of land
What is a shield volcano?
This lava forms under water
What is pillow lava?
Horizontal fissures filled with magma
What are sills?
The viscosity of lava depends mainly on this
What is the silica content?
Contains a mixture of minerals
What is a rock?
The smallest volcano, can form in a single eruption
What is a cinder cone?
A mudslide caused by a volcano
What is a lahar?
Mineral terraces are often associated with these
What are hot springs?
The eruption of this volcano was the largest ever recorded
What is Mount Tambora?
Formed from deposits of eroded materials
What is sedimentary rock?
This volcano is formed primarily from pyroclastic material
What is a cinder cone?
A rapid downhill movement of hot volcanic particles suspended in gasses
What is a pyroclastic flow?
This results from the geothermal heating of water found near magma
What is a geyser?
Most active volcanos in the world exist near
What is convergent tectonic boundaries?
Results from heat and pressure applied to rocks underground
What is metamorphic rock?
This volcano is formed from both pyroclastic and lava flows
What is a composite/stratovolcano?
A layer of loose pyroclastic materials and ash covering the ground
What is tephra?
Large formations of cooled magma typically found near sills or dikes?
What are plutons?
Tiny angular, glassy fragments
What is ash?
A series of low frequency shockwaves in the earth's crust
What is an earthquake?
This is underneath Yellowstone National Park
What is a supervolcano?
Widespread, thick layers of lava covering millions of square miles
What is a basalt trap?
These cooled magma formations are known only because they are exposed through erosion
What are batholiths?
Streamlined mass of ejected lava that has solidified in flight
What is a bomb?
A naturally occurring, inorganic, crystalline structure with a specific chemical composition
What is a mineral?