Earthquake 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
a measure of the strength of earthquakes
explosive volcano
explosive type of eruption
nonexplosive volcano
calm type of eruption
Krakatoa
one of the most deadly eruptions
Yellowstone supervolcano
the most deadly volcano to erupt if erupts
San Andreas fault
1,200km fault in california
Mid-oceanic ridge
sea-floor mountain system
