Plate Boundaries
Where two plates move toward each other
Convergent boundary
The innermost layer of the Earth
Inner core
This feature forms when two continental plates converge
Mountains
This tool measures seismic waves
Seismometer or seismograph
Molten rock found underground
Magma
San Andreas is a type of this boundary
Transform fault
The two types of crust
Oceanic and continental
Scientist who developed the theory of continental drift
Alfred Wegener
This type of seismic wave arrives first
Primary waves (p-waves)
Hawaii is an example of volcanoes formed because of this
Hot spot
When one plate sinks down under another plate
Subduction
These two layers make up the mantle
Mesosphere and Asthenosphere
This type of rock makes up the oceanic crust
Basalt
This type of seismic wave cannot move through liquids
Secondary waves (s-waves; shear waves)
Type of volcano found at subduction zones
Stratovolcano/Composite
This forms at divergent boundaries
Oceanic ridges (or rift valleys)
This type of crust is older
Continental crust
Scale used to classify the strength of an earthquake
Richter scale
The process of finding the epicenter is called
Triangulation
Type of volcano with runny lava
Shield volcano
Compressional forces push the hanging wall up above the footwall in this type of fault
Reverse (thrust) fault
The tectonic plates are considered this "layer"
Lithosphere
Ropey, slow-moving, basaltic lava
Pahoehoe
The point in Earth where seismic energy is released
Focus
The amount of this mineral determines the viscosity of the magma/lava
Silica