what is an earthquake?
a shaking movement of the gorund surface resulting from an energy release in the earth’s crust
what is fracking?
the process of opening deep rocks to access trapped fossil fuels. high pressure water breaks these rocks
what is a blind fault?
when a fault movement does not break through to the ground surface
what is a fault creep?
aka fault rupture
movement along the fault can occur by sudden displacement of the crust or by a continuous and intermittent slow movement
what are the two types of seismic waves?
body waves and surface waves
what is a tsunami wave?
it is a seismic sea wave. the seafloor rises up and the sea water rises up with it then rushes away to find a level surface
What kind of fault is the San Andrea fault?
right lateral movement
what is the difference between a P wave and an S wave?
p wave = faster and reaches the ground surface first
s wave = responsible for the greatest damage in high rise buildings and bridges
what is the order seismic waves travel in?
p wave is first, then the s wave
p wave is a jolt and s wave is the rolling motion followed up
