Don't blow your top
This is the magma formed by oceanic ridges.
What is basaltic?
Largest broadest volcanoes.
What are shield volcanoes?
Component of continental crust that thickens magma.
What is silica?
This is a weak point in the lithosphere where the crust is thin.
What is a hot spot?
This is what happens when an oceanic plate converges with a continental plate.
What is subduction?
This is the magma formed by a hot spot under a continental crust.
What is granitic?
These are the tallest volcanoes.
What are cinder-cone volcanoes?
Steep wall depression caused by a volcanic eruption.
What is a crater?
This is a large pool of molten rock under he Earth's surface.
What is a magma chamber?
This is what forms when two continental plates collide.
What are mountains?
This is the magma created at subduction zones.
What is andesite?
Have layers of lava and ash.
What are stratovolcanoes?
Rocks shot out from a volcanic eruption.
What is tephra?
This is a pipe that carries magma from the chamber to the vent.
What is a conduit?
This causes tectonic plates to move.
What are convection currents in the asthenosphere?
Magma that is rich in trapped gasses and silica causing quick violent eruptions.
What is granitic?
Iceland was formed by this type of volcano.
What is a shield volcano?
This is volcanic glass.
What is obsidian?
This is the opening where magma travels to the surface.
What is the main vent?
These 3 things can form when oceanic plates diverge.
What is an oceanic ridge, rift valley, new seafloor?
Magma filled with water vapor and carbon dioxide, and silica.
What is Andesite?
This is the most common type of volcanoes.
What is a composite (stratovolcano)?
Pyroclastic material that settles and forms cinder-cone volcanoes.
What is scoria?
Rock made when basaltic magma cools in the water.
What is Obsidian?
This is a land form that forms when two oceanic plates collide.
What is an island arc.