earthquakes Flashcards
ring of fire
a path along the Pacific Ocean
Strike-slip fault
vertical (or nearly vertical) fractures where the blocks have mostly moved horizontally.
Normal fault
inclined fractures where the blocks have mostly shifted vertically.
Reverse fault
caused by compressional forces and results in shortening.
P-waves
compressional wave
S-waves
shakes the ground back and forth perpendicular to the direction the wave is moving.
epicenter
the central point of something, typically a difficult or unpleasant situation.
focus
the state or quality of having or producing clear visual definition.
Richter magnitude scale
The Richter scale – also called the Richter magnitude scale and Richter’s magnitude scale – is a measure of the strength of earthquakes
explosive volcano
sufficient gas has dissolved under pressure within
nonexplosive volcano
most common type of volcanic eruptions.
Krakatoa
partially destroyed by its eruption in 1883
Yellowstone supervolcano
eruption of magnitude 8 on the Volcano Explosivity Index
San Andreas fault
continental transform fault
Mid-oceanic ridge
a continuous range of undersea volcanic mountains
