Vocabulary
Volcanoes
Pyroclastic Material
Eruptions
Toss Up
100
This is an opening at the surface of the Earth through which volcanic material passes
What is a vent?
100
This type of volcano has gently sloping sides
What is a shield volcano?
100
These materials are the large blobs of solid magma
What are volcanic bombs?
100
This is the name for magma that has come onto the Earth's suface
What is lava?
100
This is the funnel-shaped pit at the top of a volcano
What is a crater?
200
This is a volcanically active area of Earth's surface, commonly far from a tectonic plate boundary
What is a hot spot?
200
This type of volcano has alternating eruptions of nonexplosive and explosive
What is a composite volcano?
200
This material contains glasslike slivers
What is volcanic ash?
200
These are the two types of eruptions
What are nonexplosive and explosive?
200
These are the two things needed to form magma
What are pressure and temperature?
300
a large, circular depression that forms when the magma chamber below a volcano partially empties and causes the ground above to sink
What is a caldera?
300
This type of volcano is currently erupting or will erupt sometime in the near future
What is an active volcano?
300
These materials are the largest pieces of pyroclastic material
What are volcanic blocks?
300
This type of eruption is the most common
What is nonexplosive?
300
This type of lava flows out under water and forms rounded lumps
What is pillow lava?
400
This is a wide, flat landform that results from repeated nonexplosive eruptions of lava that spread over a large area
What is a lava plateau?
400
This type of volcano is not erupting currently but could sometime in the future
What is a dormant volcano?
400
This material means "little stones" and are pebblelike pieces of solid magma
What is lapilli?
400
These start to get bigger and more intense and are used to predict when an eruption might happen.
What are small quakes?
400
This is the type of boundary where subduction occurs
What is convergent boundary?
500
This is an area of deep cracks that forms between two tectonic plates that are pulling away from each other
What is a rift zone?
500
This type of volcano has steep sides and is the result of moderately explosive eruptions
What is a cinder cone volcano?
500
Pyroclastic material is seen in this type of an eruption
What is explosive?
500
This is the term for the enormous amount of ash, gas, and dust that is ejected during an eruption. It can travel as fast as 200km/h.
What is pyroclastic flow?
500
This type of lava flows slowly and forms glassy wrinkles
What is pahoehoe?
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