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Vocabulary
Volcanoes
Underground Magma Formations
Volcanic Islands
Miscellaneous
100
An opening in Earth's crust where magma erupts.
What is a Volcano
100
What is the cup-shaped depression that forms at the top of a volcano around the vent?
What is a crater
100
What is a volcano that is recently or currently erupting?
What is an active volcano?
100
This is a stationary pool of magma that an ocean-plate slowly moves over creating a chain of volcanoes.
What is a hot spot
100
This volcano no longer erupts or is considered dead.
What is an extinct volcano
200
What is hot melted rock or magma that erupts above the Earth's crust.
What is Lava
200
This forms when a volcano collapses in on itself.
What is a caldera.
200
This hardened lava formation raises the rock above it to form a dome-shaped formation.
What is a laccolith
200
What is a line of volcanic islands that form over a hot-spot.
What is an Island Chain
200
What volcano is flat, has a broad base, and thin flowing lava?
What is a shield volcano
300
What is an outpouring of melted rock, ash, gases, or a combination of these?
What is an eruption
300
What is the circle of volcanoes that surround the Pacific Ocean?
What is the Ring of Fire?
300
What is a vertical crack where magma can harden.
What is the dike
300
This is formed when an ocean-floor plate is pushed under another ocean-floor plate at the plate boundary.
What is an Island Arc
300
When a volcano is in this state it is sleeping.
What is dormant
400
Melted rock formed under the crust that rises and forms a hot pool
What is magma
400
Most volcanoes are found where?
What are plate boundaries
400
This is the largest and deepest magma formation.
What is the batholith
400
What islands are an example of an island chain where the ocean-plate slowly moves over a hot spot?
What are the Hawaiian Islands.
400
This volcano has as a narrow base, steep sides and is formed by cinders.
What is a cinder-cone volcano
500
It is below the crust and where a plate that is pushed under another goes to melt into magma.
What is the mantle
500
Volcanoes tend to erupt where?
What is where one plate is pushed under another.
500
This is were magma hardens between horizontal layers of rock.
What is a sill
500
These islands in Alaska form an island arc.
What are the Aleutian Islands.
500
This volcano is cone-shaped and is made up of layers of ash, cinders and lava.
What is a composite volcano