1. What are the three types of plate boundaries?

2. EARTHQUAKE!!! Natural vibrations in the Earth
Occur around or near faults
When the stress on the faults becomes too great the faults move. Instant earthquake.

3. Anatomy of an Earthquake
A – Focus – point where the earthquake originates
B – Epicenter – the point directly above the focus
C – Fault

4. Types of Waves – P Wave Back and forth motion Arrive first
Travel through solids and liquids

5. Types of waves – S wave Up and down Arrive second
Only travel through solids

6. Types of waves – L wave Surface waves Slowest moving waves
Most destructive

8. S Wave Arrival Time
48 second interval
P Wave Arrival Time

9. Locating Earthquakes Must have 3 locations
Time between arrival of S and P waves are calculated

10. Roman Numerals
Normal Numbers
Intensity of quake
Amount of Energy

12. What is the difference in the mercalli scale and the richter scale?