| A | B |
|---|
| Epicenter | where the earthquake starts |
| Primary waves | travel through everything and travel fast |
| Secondary waves | don’t travel through liquids and travel slower |
| Faults | crack in the earth’s surface |
| Richter scale | how an earthquake is rated in severity |
| Origin time | start time of an earthquake |
| Earthquake | when plates rub together |
| Divergent plate boundary | plates going away from each other |
| Convergent plate boundary | plates going towards each other |
| Plate tectonics | a series of shifting plates |
| Seismograph | a machine that records earthquake waves |
| Hot spot | where a lof of earthquakes occur |
