earthquake Flashcards
ring of fire
the rim as became as know as the ring of fire
strike-slip faults
opposing forces cause rock to break and move horizontally
normal fault
when rocks are pulled apart because of tension normal faults often form
reverse fault
when rocks are pushed together by compression reverse faults often form
p waves
a seismic wave that causes particles of rock to move in a back and forth direction
s waves
a seismic wave that causes particles of rock to move in a side to side direction
epicenter
the point on earths surface directly above an earthquakes starting point or focus
focus
the point along a fault at which the first motion of an earthquake occurs
Richter magnitude scale
measuring ground motion
explosive volcano
rare indelibly destructive
nonexplosive
most common type of eruption produce relatively calm flows of lava
Krakatoa
Is a caldera in the sunda strait between Islands of Java and Sumatra in t5he Indonesian province of Lampung.
Yellowstone supervolcano
is a volcanic candela
san andrenas fault
is a continental transform fault that extends roughly 1,200 km though ca.
mid-oceanic ridge
is a sea floor mountain system formed by plate tectonics