1. Section 1 Mrs. Trotter Vian Middle School

2. Elastic Limit

3. Faults When rocks break, they move along surfaces called faults It takes a tremendous amount of force to overcome the strength of rocks and to cause movement along these faults

4. What causes faults? The Earth is in constant motion Stress on rocks near plate edges The vibrations of breaking rock causes earthquakes

5. Types of Faults Normal Reverse Strike -Slip

6. Normal Faults Rock above the fault surface moves downward in relation to rock below the fault surface

7. Reverse Faults When rock breaks from forces pushing from opposite directions, the rock above is forced up and over the fault line

8. Strike-Slip Faults Rocks on either side of the fault are moving past each other without upward or downward movement