Earthquake/Volcano Flashcards
a break in a body of rock along which one block slides relative to another
fault
as
ring of fire
the boundary between tectonic plates that are sliding past each other horazontally
transform / strike-slip
the boundary between two tectonic plates that are moving away from each other
divergent / normal
the boundary formed by the collision of two lithospheric plates
convergent / reverse
a seismic wave that causes particles of rock to move in a back-and-forth direction
P-waves
a seismic wave that causes particles of rock to move in a side-to-side direction
S-waves
the point on Earth’s surface directly above an earthquake’s starting point
epicenter
the point along a fault at which the first motion of an earthquake occurs
focus
as
Richter scale
as
explosive volcano
as
nonexplosive volcano
a volcanic island situated in the Sunda Strait between the islands of Java and Sumatra in the Indonesian province of Lampung
Krakatoa
as
Yellowstone supervolcano
as
San Andreas fault
a long, undersea mountain chain that forms along the floor of the major oceans
Mid-oceanic ridge
a type of volcano usually built almost entirely of fluid lava flows
shield volcano
a steep conical hill of loose pyroclastic fragments
cinder cone volcano
a conical volcano built up by many layers of hardened lava, tephra, pumice, and volcanic ash
composite volcano
a volcanically active area of Earth’s surface far from a tectonic plate boundary
hot spot
