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chapter 6 earthquake
Question | Answer |
---|---|
plate | a large section of earths crust and rigid upper manntle that moves around |
fault | when rocks break they move around a fault |
earth quake | vibrations of breaking rock |
normal fault | when rock is streched by force |
reverse fault | surface is foced up and over rock |
strike slip fault | rocks on either side are moving past echother |
wave | rythmic movment that carries energy through matter |
seismic wave | generated by eathquakes traveling through earth |
focus | were energy is released |
primary wave | causes particals in rocks to move |
secondary wave | moves through earth by causing particals in rocks to move |
surface waves | moves rock particals in backward rolling motion |
epicenter | point on earths surface directly above earthquake focus |
seismograph | registers waves |
crest | highest point in wave |
magnitude | were energy is released |
inquefaction | were wet soil turns to liqued |
isunamis | ocean waves caused by earthquakes |