lesson two: earthquake distribution

plate margins

majority of earthquake centers / areas are located along where?

shallow - destructive

strength of earthquakes vary from ______

seismic waves

the kind of waves earthquakes release

primary & secondary waves

the kind of waves that could travel within the earth’s interior

triangulation method

used to determine the epicenter of an earthquake

triangulation method, seismograph

the difference in arrival time between the primary & secondary ( p waves & s waves ) which comes from the ___ that they have in seismic recording stations is recorded

the distance of the earthquake’s focus to the station

what can the s-p graph tell us?

when 3 recorded measurements were done at different stations

when can we use the triangulation method to find the epicenter?

primary waves

these waves can travel faster and can travel through solid, liquid, and gas

secondary waves

these waves travel slower & only through solids

primary waves

what kind of wave does the seismograph receive faster