| A | B |
|---|
| Earthquake | A shaking of the earth caused by the release of energy. |
| Fault | A break in the Earth's crust. |
| Richter Scale | Used to measure the magnitude of an earthquake. |
| Tsunami | Gigantic ocean wave triggered by movement of the ocean floor. |
| Crust | Outermost layer of the Earth. |
| Mantle | Earth's middle layer, composed of hot rock. |
| Core | Innermost layer of the Earth. |
| Ring of Fire | A belt of volcanoes and earthquake activity around the Pacific Ocean. |
| Magnitude | Unit of measurement of an earthquake. |
| Seismologist | Scientist who studies earthquakes. |
| Plate tectonics | Theory explaining the movement of the Earth's crust. |
