This type of volcano is formed by the eruption of fluid basaltic lavas? (e.g. in Hawaii)
What is Shield Volcano?
100
A depression at the summit of a volcano.
What is crater?
100
Molten rock found under the Earth's crust.
What is Magma?
100
Magma once it passes through the Earth's crust.
What is Lava?
100
The general name for a mountain formed lava or pyroclastic material.
What is a volcano?
200
Most magma originates here?
What is in the crust and upper mantle where rock partially melts?
200
If gases and pressure build up long enough in a volcano eventually it may do this.
What is erupt?
200
Of the three major types of volcanoes, this type is the largest.
What is Shield Volcanoes? (They extend all the way to the ocean floor)
200
Large, steep sided volcanoes composed of both lava flows and pyroclastic material.
What is Composite Cone Volcanoes?
200
The total collapse of the top of a composite volcano after an eruption can form a huge depression called this.
What is caldera?
300
This type of magma has the highest viscosity?
What is rhyolitic magma?
300
Small volcanoes built primarily of pyroclastic material ejected from a single vent, with smooth sides.
What is Cinder Cones?
300
The most famous Composite Volcano in Japan.
What is Mt. Fuji?
300
Broad, gently sloping Shield volcanoes are built from this type of lava.
What is fluid basaltic lava flows?
300
These are three types of pyroclastic material.
What is lapilli, cinders & volcanic bombs?
400
These are sheet-like intrusive igneous bodies that cut across preexisting rock layers?
What are dikes?
400
The name given to particles produced in volcanic eruptions.
What is Pyroclastic materials?
400
A beautiful Composite Volcano your Earth Science teacher has climbed. It is 14,411 ft. high, is the highest glaciated peak in the contiguous United States and it is near Seattle.
What is Mt. Rainier?
400
This famous volcano (in the Pacific Northwest) formed at a convergent boundary (subduction zone)?
What is Mount St. Helens?
400
General name for structures that result from the cooling and hardening of magma beneath the Earth's surface.
What are plutons?
500
These are lens-shaped intrusive igneous masses that arch overlying strata upward and are exposed after millions of years of erosion.
What are Laccoliths?
500
The volcanic activity that formed the Hawaiian Islands far away from any plate boundaries.
What is Hot Spots?
500
These are huge masses of igneous rock that formed when magma intruded at depth, became crystallized, and subsequently was exposed by millions of years of erosion.
What are Batholiths?
500
This is the plate tectonic setting for volcanoes in the Hawaiian islands?
What is intraplate volcanism?
500
These factors determine whether a volcanic eruption is explosive or relatively quiet.
What are magma composition, magma temperature, and the amount of dissolved gases in the magma?