Earthquakes and Volcano Flashcards
Ring of fire
The Ring of Fire is a region around much of the rim of the Pacific Ocean where many volcanic eruptions and earthquakes occur.
Strike-slip fault
vertical (or nearly vertical) fractures where the blocks have mostly moved horizontally
Normal fault
a type of dip-slip fault where the hanging wall moves downwards from the footwall
Reverse fault
a dip-slip fault in which the hanging wall moves upwards, relative to the footwall
P-waves
the fastest seismic waves and can move through solid, liquid, or gas
S-waves
transverse waves that travel slower than P-waves
epicenter
the point on the earth’s surface vertically above the focus of an earthquake.
focus
the center of interest or activity.
Richter magnitude scale
an earthquake’s magnitude
explosive volcano
In volcanology, an explosive eruption is a volcanic eruption of the most violent type.
nonexplosive volcano
appears to result from rapid, sub-surface gas release from magma ascending as a permeable foam
Krakatoa
Krakatoa, also transcribed Krakatau, is a caldera in the Sunda Strait between the islands of Java and Sumatra in the Indonesian province of Lampung.
. Yellowstone supervolcano
The Yellowstone Caldera, sometimes referred to as the Yellowstone Supervolcano, is a volcanic caldera and supervolcano in Yellowstone National Park in the Western United States.
San Andreas fault
The San Andreas Fault is a continental transform fault that extends roughly 1,200 kilometers through California.
Mid-oceanic ridge
A mid-ocean ridge is a seafloor mountain system formed by plate tectonics.
