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Volcanoes 1
Volcanoes 2
Volcanoes 3
Volcanoes 4
Volcanoes 5
100
Erupted magma, rock and ash is known as this.
What is tephra?
100
A volcano that has no activity for some time or probably would not erupt again are known as this.
What is extinct?
100
Currently erupting or soon to erupt volcanoes are known as this.
What is active?
100
Scorching hot tephra, ash, and gas that may speed down a volcano’s slopes is known as this.
What is a pyroclastic flow?
100
The long cracks in the ground through which lava erupts are known as this.
What is a fissure?
200
Volcanoes are common along these.
What are convergent and divergent plate boundaries?
200
A volcano with no current activity but has erupted recently is known as this.
What is dormant?
200
Water heated below ground that rises through a crack to the surface to create this.
What is a hot spring?
200
A huge hole that is produced by the eruption of a magma chamber in a supervolcanos.
What is a caldera?
300
Low and wide volcanoes with effusive eruptions are known as this.
What is a shield volcano?
300
A lava landform formed when there is not enough magma or pressure to create an explosive eruption, so the lava flows out and cools.
What is a lava dome?
300
A liquid’s resistance to flow is known as this.
What is viscosity?
300
Magmas low in silica, high in magnesium and iron minerals with low viscosity are known as this.
What are mafic magmas?
300
An event where geologic steam, pressure, and magma are release through a fissure is known as this.
What is an eruption?
400
Relatively nonviolent releases of energy that is associated with mafic magma are known as this.
What is an effusive eruption?
400
Very viscous magmas high in silica content are known as this.
What are felsic magmas?
400
Places where magma collects underground is known as this.
What is a magma chamber?
400
These are created when water is superheated heated beneath the Earth’s surface and eventually erupts from underground.
What is a geyser?
400
Violent releases of energy that is associated with felsic magmas are known as these.
What are explosive eruptions?
500
Very large and rare volcanoes whose eruption are known to be associated with extinction events are known as this.
What is a supervolcano?
500
Made of felsic to intermediate rock, these very tall volcanoes have fairly viscous lava and often explosive eruptions.
What are composite volcanos?
500
The most common type of volcano is fast growing with short, steep sides and a crater on top.
What is a cinder cone?
500
When a pyroclastic flow mixes with melted snow, this muddy phenomenon is often observed.
What is a lahar?
500
The column of hot rock that produces the Hawaiian Islands and the Yellowstone supervolcano is known as this.
What is mantle plume?