| A | B |
|---|
| crack in the earth where the earth moves | fault |
| the wrong name for this is 'tidal wave' | tsunami |
| underwater volcanoes and landslides can cause a: | tsunami |
| fastest type of seismic wave | p |
| L stands for: | long |
| short name for 'secondary' wave | s |
| earthquake wave like sound | p |
| causes rock particles to move side to side | s |
| waves that start at the epicenter | l |
| place where earthquake starts | focus |
| place where L waves start | epicenter |
| device to detect and measure seismic waves | seismometer |
| device to measure and record earthquakes | seismograph |
| written record produced by seismograph | seismogram |
| number of seismographs needed to locate a quake | 3 |
| point on earth surface above focus | epicenter |
| number system on a seismogram | Richter scale |
| 7 magnitude quake is -- time stronger than a 4 magnitude quake | 1000 |
| tiltmeters and creepmeters may help predict: | earthquakes |
| slowest moving seismic waves: | l |
