| A | B |
|---|
| What is an Earthquake? | shaking of lithosphere |
| What causes Earthquakes? | Motion of energy waves, source of waves is the motion at the FAULT |
| During earthquakes the potential energy stored in Rock is released as _________ | Seismic Waves |
| Focus: | point of stress release inside Earth |
| Epicenter: | point on the surface directly above the focus |
| What is a fault? | a crack in Earth's crust with movement |
| P Waves (primary waves) are | FAST, can pass through both liquids and solids |
| S Waves (secondary waves) | SLOW, can pass through solids ONLY |
| How do we measure earthquakes? | Scientists called seismologists measure earthquakes using seismographs |
| Which coast of the US has more strain on plates causing more active faults? | West Coast |
