| A | B |
|---|
| Focus | Point beneath the surface that earthquakes originate from |
| epicenter | Point beneath the surface directl above he focus |
| p wave | compresional waves. On a seismograph reading the first to arrive |
| s wave | Waves move perpindicular to the wave motion. Second to arrive on a seismograph reading |
| Convergent boundary | boundary where 2 plates collide. an example is the Himalayas |
| Divergent boundary | boundary where 2 plates seperate. An example is the Mid-Atlantic Ridge. |
| Transform boundary | boundary where 2 plates slide past each other. An example is San Andreas Fault |
