Vocabulary
Volcanoes and Plate Techtonics
Volcanic Eruptions
Volcanic Landforms
A little bit of everything
100
The bowl shaped area around a volcano's central vent is called
What is a crater?
100
In which location would you MOST LIKELY find volcanoes?
What are along mid-ocean ridges and where a plate is subducted?
100
The main factor that accounts for the difference between quiet and explosive volcanic eruptions is
What is the silica content of the magma?
100
Tall, cone-shaped mountains in which layers of lava alternate with layers of ash are called
What are composite volcanoes?
100
Sometimes rising magma is blocked by horizontal layers of rock. The magma forces the layers of rock to bend upward into a landform called
What is a dome mountain?
200
The mass of rock that forms when a large body of magma cools inside the crust is called
What is a batholith?
200
Before lava reaches the surface, the molten material is called
What is magma?
200
The main hazard from a quiet volcanic eruption is
What is lava flows?
200
When many layers of thin, runny lava build up a high, level area, the result is a
What is a lava plateau?
200
The smallest lava fragments are produced by an explosive eruption are called volcanic ________________.
What is ash?
300
When materials build up around a vent in a steep, cone-shaped hill or small mountain this is called a _______________ volcano.
What is cinder cone?
300
A major volcanic belt that circles the Pacific Ocean is called
What is the Ring of Fire?
300
What provides the force that causes magma to erupt to the surface?
What is dissolved gases trapped in the magma?
300
A huge hole left by the collapse of a volcanic mount is called a
What is a caldera?
300
Hardened magma in a volcano's pipe that remains when softer rock around it has worn away is called
What is a volcanic neck?
400
Tall, cone-shaped mountains in which layers of lava alternate with ash is called a ______________ volcano.
What is composite?
400
A string of islands that can form from the collision of two oceanic plates is
What is an island arc?
400
If geologists detect many small earthquakes in the area near a volcano, what can they infer about the volcano?
What is it is probably about to erupt?
400
When magma hardens in a volcano's pipe, the result will eventually be a landform called a
What is a volcanic neck?
400
This is a huge hole left when the roof of a volcanic mountain's magma chamber collapses is called
What is a caldera?
500
A wide, gently sloping mountain made of layers of lava formed by quiet eruptions is called _____________ volcano.
What is shield?
500
Mountains that are formed by volcanoes along a coastline occur at a ________________ plate boundary.
What is converging?
500
Molten material that leaves a volcano's vent is called
What is lava?
500
When ash, cinders, and bombs build up in a steep pile around a volcano's vent, the result is a
What is a cinder cone volcano?
500
What kind of eruption is likely to occur in a volcano having magma that is low in silica?
What is a quiet eruption?
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