| A | B |
|---|
| Seismograph | A seismograph is an instrument that records and measure seismic waves. |
| Magnitude | Measurement of an earthquakes strength based on seismic waves and movement along the fault. |
| Epicenter | The point on the Earth’s surface that is directly above the focus of the earthquake |
| Focus | : The point beneath the Earth’s surface where rock breaks under stress and causes an Earthquake |
| Richter Scale | A scale that rates an earthquakes magnitude based on the size of the seismic waves |
| Mercalli Scale | A scale that rates earthquakes according to their intensity and how much damage they cause in a particular area. |
| Moment Magnitude Scale | A scale that rates earthquakes by estimating the total energy released by an earthquake |
| Earthquake | The shaking that results from the movement of rock beneath Earth's surface |
