A'a-natomy
Hot molten rock below the earth's surface
DAILY DOUBLE - What is magma
A land or underwater feature that forms when hot, liquid rock (magma) reaches the surface of Earth
What is a volcano
This mineral is responsible for changing the viscosity of a lava
What is quartz (silica)
In order to create a volcano, we must first have these two conditions
What is hot molten rock deep underground
The status of a volcano that hasn't erupted in 10,000 years, but still can.
What is a dormant volcano
Hot molten rock that flows up, onto Earth's surface.
What is lava
A type of volcano that is made up of small chunks of volcanic rock and can be somewhat explosive
What is a cinder cone
This physical property describes a liquid's resistance to flow and can affect the explosiveness of an eruption
What is viscosity
The scientific principle that causes hot molten rock to rise
What is convection
Ropey formations of basalt flows
What is pahoehoe
Openings at the tops of volcanoes that allow material to erupt
What are vents
What is a shield volcano
Most explosive eruptions are of this type of lava
Felsic lava
A geologic process that causes oceanic rocks to push deep into the earth and melt
What is subduction
Areas of volcanic activity not at or near plate boundaries/ subduction zones
What are hot spots
This part of a volcano connects the opening to the molten source underground.
What is the conduit
Stratovolcano (Composite)
This type of runny lava cools into a dark colored rock
What is mafic /basaltic lava
This kind of subduction creates volcanic island arcs
What is oceanic-oceanic subduction
Non explosive eruptions with viscous lavas make these kinds of volcanoes
What is a lava dome
The large space deep underground that stores the hot molten rock underneath a volcano.
What is a magma chamber
These types of volcanoes typically last 1 eruption cycle before becoming extinct
What are cinder cones
This type of lava clumps up into a dome, plugging the top of the volcano
What is felsic lava
Continental-oceanic subduction creates this kind of volcanic feature
What is a volcanic arc
This type of volcano is characterized by a large crater that is formed by the collapse of the volcano's summit, and often has steep walls and a central vent that may emit gases or small eruptions.
What is a caldera