Earthquakes
Plate Tectonics
Volcanoes
Vocabulary
Miscellaneous
100
Small earthquakes that occur following the main quake
Aftershock
100
The East African Rift Valley is an example of what type of boundary
Divergent
100
These types of volcanoes are most common in hot spot regions
Shield Volcanoes
100
The spot on the surface directly above the focus
Epicenter
100
This type of volcano most likely occurs in subduction zones
Composite (Strato) Volcano
200
The scale used for measuring small, shallow earthquakes by using the amplitude of the largest seismic wave
The Richter Scale
200
Earths rigid outer layer, consisting of the crust and upper mantle
Lithosphere
200
The property of magma that causes it to rise form the mantle up through the crust
Density
200
The type of stress which causes the crust to pull apart
Tension
200
The property of magma that causes magma to rise through the crust
Density
300
Slippage along a fault leads to a "springing" back of rock to its original place.
Elastic Rebound Hypothesis
300
The chain of volcanoes surrounding the pacific plate where a lot of volcanic activity happens
The Ring of Fire
300
Magma is a mix of what three items
Melted Rocks, Minerals and Gases
300
Divergent Boundaries are also known as _____________ centers
Spreading
300
The minimum number of seismograms needed to find the epicenter of an earthquake
Three
400
The type of energy produced form Earthquakes
Elastic
400
The type of boundary where plates are colliding
Convergent
400
Volcanoes that occur under water along divergent boundaries form what?
Mid Ocean Ridge
400
When one plate goes beneath another, it creates a process called
Subduction
400
Earthquakes most often occur where/
Fault Lines
500
When reading a seismogram, what order do the waves arrive?
P Wave --> S Wave --> Surface Waves
500
This occurs when magma has broken through the lithosphere and formed a plume where magma is constantly ejected
Hot Spot
500
This volcano is mostly made of pyroclastic material, and has a bowl shaped crater encircling the top
Cinder Cone
500
The point where the earthquake originates
Focus
500
This fault line is responsible for the 1906 San Francisco Earthquake
San Andreas
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