| A | B |
|---|
| Earthquake | vibration of the earth produced by rapid release of tremendous energy |
| Focus | the energy radiates out in all directions from this |
| Epicenter | is the point on the surface directly above the focus |
| Primary Wave | Seismic that is a push pull wave, travels though liquid, gas, solid |
| Secondary Wave | Seismic wave that the particles move at right angle, travel through solids only |
| Surface Wave | travel on the surface in a circular motion. Make buildings fall over |
| Seismograph | instrument used to measure earthquakes |
| Three | Minimum stations needed to determine epicenter |
| fault | the location of rock movement along a fractured rock plain |
