| A | B |
|---|
| FOCUS | POINT OF ORIGIN OF AN EARTHQUAKE |
| EPICENTER | POINT ON THE SURFACE NEAREST THE EARTHQUAKE |
| SEISMOGRAPH | INSTRUMENT USED TO MEASURE EARTHQUAKES |
| MERCALLI SCALE | SUBJECTIVE METHOD OF MEASURING EARTHQUAKES |
| RICHTER SCALE | MEASURES MAGNITUDE |
| 9.5 | STRONGEST MAGNITUDE RECORDED |
| FAULTS | WHERE MOST EARTHQUAKES OCCUR |
| SEISMIC WAVES | EARTHQUAKES SEND OUT THESE SHOCK WAVES |
| P-WAVES | CAN TRAVEL THROUGH EARTH'S CORE |
| P & S WAVES | CAN TRAVEL THROUGH EARTH'S MANTLE |
| SURFACE WAVES | CAUSE THE MOST DAMAGE |
| HIGH WINDS | NOT ASSOCIATED WITH EARTHQUAKES |
| PACIFIC | REGION OF EARTH WITH MOST FREQUENT QUAKES |
| CHILE | COUNTRY OF HIGHEST MAGNITUDE |
| CALIFORNIA | MOST QUAKE PRONE STATE |
| PRINCE WILLIAM SOUND | US GREATEST MAGNITUDE QUAKE |
| 10 TIMES | DIFFERENCE BETWEEN MAGNITUDES |
| TSUNAMIS | CAUSED BY SEA FLOOR QUAKES |
| ELASTIC ENERGY IN BENT ROCK | IMMEDIATE SOURCE OF ENERGY FOR QUAKES |
