Earthquakes

1. The point along a fault at which the first motion of an earthquake occurs.
4. This plate motion occurs where two plates slip past each other.
8. Earthquakes take place near the edges of these plates.
10. The sudden return of elastically deformed rock to its undeformed shape is called ______ rebound..
13. The Modified Mercalli Intensity Scale measures the ________ of an earthquake.
14. What's another word for an earthquake's strength?
15. This plate motion occurs where two plates push together.

1. A break in a body of rock along which one block slides relative to another.
2. The simplest method of determining the epicenter of an earthquake is the ___ Time Method.
3. Seismic waves that cause the most damage.
5. Also called shear waves, these seismic waves cause rock particles to move in a side-to-side direction.
6. The Richter Magnitude scale measures the _______ of an earthquake.
7. Also called P waves, these seismic waves are the first to be detected in an earthquake and cause rock particles to move in a back-and-forth direction.
9. The ____ hypothesis states that a major earthquake is most likely to occur along the part of an active fault where no earthquakes have occurred for a certain period of time.
11. This plate motion occurs where two plates pull away from each other.
12. The point on Earth's surface directly above an earthquake's starting point, or focus.