PLATE TECTONICS
Plates
Earthquakes 1
Earthquakes 2
Volcanoes
100
Pangaea
What is the theoretical land mass that contained all of the continents?
100
Divergent
What is interaction of plates that moves away from each other?
100
the name for seismic occurrences when vibrations are created by the breaking of rock along a fault line
What is an earthquake?
100
the seismic wave that moves the fastest
What is the primary wave?
100
An area in the mantle that is unusually hot, causing magma to break through the crust in the middle of a plate.
What is a hot spot?
200
Continental Drift
What is the theory that suggests that all continents have slowly moved over time to their present location?
200
Transform Boundary
What is an area of plate interaction that slide along each other?
200
point below the surface where the earthquake energy is first released
What is the focus?
200
Seismic wave that causes rock to move perpendicular to the wave of energy
What is a secondary wave?
200
type of volcano formed from explosive eruptions
What is a cinder cone volcano?
300
Convection current
What is the cycle of heating and cooling magma which causes movement of continental plates?
300
Subduction
What is the result of convergent plate interaction where the less dense plate slides below the other?
300
this scale is used to measure the earthquakes magnitude
What is the Richter Scale
300
Tsunami
What is an ocean wave created by earthquakes?
300
this type of lava causes explosive volcanic eruptions
What is granitic (or high silica)?
400
Sea Floor Spreading
What is the separation of continental plates in the mid-Atlantic that allows magma to rise to the surface?
400
Plates that move together
What is convergent ?
400
the instrument used for measuring seismic waves
What is the seismograph?
400
Fault
What is the surface along which rocks pass their elastic limit and break?
400
the term for a volcanic crater that has collapsed
What is a caldera
500
Asthenosphere
What is the plastic-like layer of the upper mantle that continental plates move on?
500
Rifts, Mountains, valleys
What are the physical results of plate interactions?
500
type of seismic wave that causes the most destruction
What is a secondary wave?
500
Scale used to measure an earthquakes destruction
What is the Mercalli Scale?
500
this type of lava causes quiet volcanic eruptions
What is basaltic?
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