Parts of a Volcano
This is magma that flows out onto Earth's surface.
What is lava?
What are cinder cones, Shields, and Composite/stratovolcanoes?
Molten rock beneath the earth's surface.
What is Magma?
Most volcanoes, like most earthquakes, occur along these
Volcanoes that will not erupt again in the future.
What are extinct volcanoes?
reservoirs from which volcanic materials erupt
What are magma chambers?
A cinder cone volcano is made up of this.
What are small lava rock particles, or cinders
small lava fragments
What is tephra?
When two plates collide, they form this
What is a convergent boundary?
These volcanoes have become inactive, but people are not certain that they will not erupt again.
What are dormant volcanoes?
Openings through which volcanic materials erupt, located near the peak of the mountain.
What is a vent?
The appearance of a shield volcano
What is a gentle slope and broad shape?
A region of volcanic activity in the middle of a tectonic plate.
What is a hot spot?
Magma rises because it is lower in ______ than the surrounding rock.
What is density?
These volcanoes generally erupt non-violently
These are bowl-shaped depressions. Forceful explosions may blow out the tops of mountains to form them.
What are craters?
This type of volcano has explosive eruptions and is made up of layers of lava flows alternating with layers of ash, cinders, and rocks.
What is a composite volcano?
The measure of how resistant a fluid is to movement
What is viscosity?
Hawaii was formed by this
What is a hot spot?
These volcanoes are explosive and the smallest type of volcano
What are cinder cones?
Define Subduction Zone and the type of plate boundary it occurs on.
subduction occurs when two plates collide. the denser; heavier, palte slides under the other plate and becomes part of the mantle.
Mt. St. Helens is this type of volcano.
What is a composite/stratovolcano?
A zone of frequent earthquakes and volcanic eruptions that encircles the Pacific Basin.
What is the Ring of Fire?
Name a planet, besides Mars and Earth, that has volcanoes on its surface
What is Venus?
These are the three things that determine how explosive an eruption will be. (Must have ALL three to earn points!)
- Water Vapor
- Trapped Gases
- Type of Magma (OR: viscosity, composition)