Viscosity
What is viscosity?
The measure of resistance to flow.
What is a SEAMOUNT?
A mountain rising from the floor that doesn't reach the waters surface; usually caused by extinct volcanoes.
What is a convergent boundary?
The boundary between two colliding plates, often known for building mountains.
What is the ring of fire?
A path along the Pacific oceans characterized by active volcanoes and frequent earthquakes.
What movies the plates over the hotspots?
Convection currents.
What happens if magma has high viscosity?
The magma would trap more gas and would be more explosive.
What are three types of volcanoes?
Shield, Cinder, and Stratovolcano.
What is divergent boundary?
When two plates are moving apart, magma come up to create new crust.
Why is the pacific ocean called "The Ring of Fire"?
There's increased volcanic activity in this region due to plate boundaries gives the nickname.
What is a Hot Spot?
An area over a mantle or an area under the crust where magma is hotter than the surrounding magma.
What happens when magma has low viscosity?
The magma is runnier and has less explosions.
Which type of volcano emits lots of Basaltic lava but has minimum explosions?
Shield Volcanoes
Define Subduction zone.
The region where an oceanic plate sinks down into the athenosphere at a convergent bundary.
How far does "The Ring of Fire stretch?
From the edge of South America to below Australia.
What is a Plume?
A column of moving magma or lava.
Does BASALTIC magma have high viscosity?
Low Viscosity
Which volcano is emits gases, ashes, pumice, and silica lava?
Strato//Composite volcano.
What is a trench?
A surface feature in the seafloor produced by a descending plate during subduction.
True or False: Volcanoes only exists because of "The Ring of Fire".
False.
What state in the U.S.A. would most likely have a volcanic chain?
Hawaii.
What type of magma does GRANITIC have?
High Viscosity.
What is a lava dome?
A rounded volcano that forms when lava barely flows.
Define Rift.
A deep crack in the Earth's surface associated with divergent boundary.
What is the percentage of the world's volcanic activity in "The Ring of Fire"?
75%.
A volcanic chain created by the movement of a crustal plate over a hot spot in earth's mantle.