| A | B |
|---|
| EARTHQUAKE | THE SHAKING AND VIBRATING OF THE EARTH CAUSED BY LARGE AND SUDDEN RELEASES OF ENERGY. |
| CRUST | THE OUTERMOST LAYER OF THE EARTH. |
| FAULT | A FRACTURE IN THE EARTH’S CRUST |
| MANTLE | THE LAYER OF THE EARTH THAT LIES BENEATH THE CRUST |
| LITHOSPHERE | THE OUTER PORTION OF THE EARTH’S SURFACE MADE UP OF THE CRUST AND THE MANTLE |
| LITHOSPHERIC PLATES | THE BROKEN LARGE PIECES OF THE EARTH’S LITHOSPHERE. |
| POTENTIAL ENERGY | STORED ENERGY |
| KINETIC ENERGY | THE ENERGY OF MOVEMENT |
| SEISMOLOGIST | A SCIENTIST WHO STUDIES EARTHQUAKES |
| PRECURSOR | AN EVENT LEADING TO AN EARTHQUAKE |
| GLOBAL POSITIONING SYSTEM | SATELLITES USED TO MEASURE THE POSITION OF A SPECIFIC LOCATION ON THE EARTH |
| WAVE | ONE OR MORE OF A SERIES OF MOVEMENTS PASSING ALONG A SURFACE OR THROUGHOUT A SUBSTANCE |
| FOCUS | POINT OF ORIGIN OF AN EARTHQUAKE |
| SEISMIC WAVE | EARTHQUAKE WAVES |
| BODY WAVE | SEISMIC WAVES THAT TRAVEL THROUGHOUT THE BODY OF THE EARTH |
| SURFACE WAVE | WAVES THAT TRAVEL ON THE SURFACE OF THE EARTH |
| P-WAVE (PRIMARY WAVE) | (PBODY WAVES THAT COMPRESS AND EXPAND THE MATERIAL THROUGH WHICH THEY TRAVEL |
| S-WAVE – (SECONDARY WAVES) | BODY WAVES THAT MOVE SIDE-TO-SIDE |
| SEISMOMETERS | - SENSITIVE DETECTORS THAT CAN DETECT VIBRATIONS EMITTED BY EVEN THE SMALLEST EARTHQUAKE. |
| SEISMOGRAPH | A SYSTEM OF RECORDING A PERMANENT RECORD OF EARTHQUAKE ACTIVITY |
| SEISMOGRAM | A RECORD OF EARTHQUAKE ACTIVITY THAT IS MADE AS A PEN TRACES OUT THE VIBRATIONS MADE. |
| AFTERSHOCK | AN EARTHQUAKE THAT FOLLOWS A LARGER EARTHQUAKE, OR MAIN SHOCK, AND ORIGINATES ALONG THE SAME FAULT AS THE MAIN SHOCK. |
| FOCUS | THE LOCATION WITHIN THE EARTH WHERE THE EARTHQUAKE RUPTURE OCCURS AND WHERE THE ENERGY IS RELEASED. |
| EPICENTER | THE POINT ON THE EARTH’S SURFACE THAT IS DIRECTLY ABOVE THE FOCUS |
