What type of volcano is produced from basaltic magma?
What is a shield.
100
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Batholith
100
What is Magma?
Molten rock beneath the earth's surface.
100
Where do most volcanoes occur?
Most volcanoes, like most earthquakes, occur along the boundaries between shifting tectonic plates.
100
What are active volcanoes?
Active volcanoes are the volcanoes that erupt constantly.
200
Andesitic magma usually creates what type of volcano?
What is cinder cone?
200
What is a cinder cone volcano?
This type of volcanic landform is made up of small rock particles, or cinders. It is characterized by a small cone with steep sides.
200
What type of magma is usually found in a shield type volcano
What is basaltic?
200
What makes magma viscous?
concentration of Silicon dioxide
200
What are dormant volcanoes?
These volcanoes have become inactive, but people are not certain if or when they will erupt again.
300
Mt Ranier is what type of volcano?
What is composite?
300
What is the name of the volcano at Pompeii, Italy?
What is Mount Vesuvius?
300
What is a hot spot?
A region of volcanic activity in the middle of a tectonic plate.
300
Why does magma rise?
magma, the melted mantle, rises because it is filled with gas and is less dense than the solid rock around it.
300
What is the rapidly moving volcanic material, (hot poisonous gas, ash and tephra) that descends down the slope of a volcanic mountain and causes massive damage?
pyroclastic flow.
400
Hawaiian islands with their gently sloping beaches and slow moving lava flows are an example of this type of volcano
What is shield?
400
What are characteristics of a composite volcano?
large, most explosive volcanoes, formed when layers of volcanic fragments, tephra, alternate with lava .
400
What is a volcanic island arc?
A long curved chain of volcanic islands.
400
Name the types of plutons
batholiths, stocks, sills, dikes, and laccoliths.
400
What is volcanism that occurs under water along mid-ocean ridges?
rift volcanism.
500
Define Subduction
When a denser; heavier, plate slides under the other plate and becomes part of the mantle.
500
Which type of volcano is the most explosive?
Composite volcano.
500
What is the Ring of Fire and where is it located?
A zone of frequent earthquakes and volcanic eruptions that encircles the Pacific Basin.
500
How are plutons classified?
size, shape, and relationship to surrounding rocks
500
Type of steep sided volcano formed as tephra is ejected high into the air then falls back to Earth and piles around the vent.