| A | B |
|---|
| Core | Deepest layer of Earth |
| Seismograph | Instrument that records earthquake waves |
| Earthquake | Shaking of the Earth's crust |
| Epicenter | Point on the Earth's surface right above the the focus of an earthquake |
| Focus | Underground point where an earthquake first starts |
| Fault | Break in the Earth's crust along which rocks move |
| Crust | Layer of the Earth that includes land and the ocean floor |
| Mantle | Thickest layer made of solid rock and melted rock |
| Plates | Continent-sized slabs that make up the crust and upper mantle |
