1. Identify the following boundaries as
convergent, transform, or, divergent.
A
B
C
Divergent
Convergent
Transform

2. ReviewReview
Earthquakes
Plate boundaries:
Convergent
Divergent
Transform

3. Earthquake WavesEarthquake Waves
P-Waves
Primary Waves-
longitudinal waves

4. P WavesP Waves

5. Earthquake WavesEarthquake Waves
Arrive first, travel almost
twice as fast as S waves
Travel through solids,
liquids, gases

7. Earthquake WavesEarthquake Waves
S-Waves
Secondary Waves-
transverse waves

9. Earthquake WavesEarthquake Waves
•Travel through solids
only

11. Surface WavesSurface Waves
Sometimes called “L”
waves
Travel through solids only
Responsible for most
damage due to their intense
vibrations

12. Surface WavesSurface Waves
Surface
waves occur
when P and S
waves reach
the surface

13. Location of EarthquakesLocation of Earthquakes
The Focus- the breaking
point (inside the Earth)
where the vibrations
originate

14. Focus

15. Location of EarthquakesLocation of Earthquakes
The Epicenter- the
location (on the surface)
directly above the Focus

16. Focus
Epicenter

17. Locating EarthquakesLocating Earthquakes
Seismologists can figure
out earthquake locations
through trilateration

18. Fresno, CA

21. Reno, NV

24. Tonopah, NV

26. Epicenter

27. http://www.sciencecourseware.com/
virtualearthquake/VQuakeExecute.
html