Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Science 2-2
Earthquakes and Seismic Waves
| Term | Definition |
|---|---|
| Earthquake | Shaking and trembling that results from the movement of rock beneath Earth’s surface. |
| Focus | The area beneath Earth’s surface where rock that is under stress breaks, triggering an earthquake. |
| Epicenter | The point on the surface directly above the focus |
| P-waves | Seismic waves that compress and expand the ground like an accordion. |
| S-waves | Seismic waves that vibrate from side to side as well as up and down. |
| Surface Waves | Move more slowly than P waves and S waves, but they can produce severe ground movements. |
| Mercalli Scale | To rate earthquakes according to the level of damage at a given place. |
| Magnitude | A number that geologists assign to an earthquake based on the earthquake’s size. |
| Richter Scale | A rating of an earthquake’s magnitude based on the size of the earthquake’s seismic waves. |
| Moment Magnitude Scale | A rating system that estimates the total energy released by an earthquake. |
| Locating the epicenter | Scientists find three areas and locate how far the earthquake is from the place and draw circles that far and the three circles that intersect is where the epicenter is. |
Created by:
olrobinson
Popular Earth Science sets