1. Why are volcanos and earthquakes concentrated along this area?
Warm-up
What is the ring of fire?
Why are volcanos and earthquakes concentrated along this area?

2. Faults

3. Fault- the surface along which rocks break and slide past one another.

4. Fault Types Normal faults- occur at divergent boundaries
Reverse faults- occur at convergent boundaries
Strike-slip – occur at transform plate boundaries
Fault Types

5. Forces
Tension- the force (stress) that occurs when forces act to stretch an object.

6. Forces
Compression – the type of stress that occurs when an object is squeezed, such as when 2 tectonic plates collide.

7. Forces
Shearing – causes a material to twist

8. Folding- the bending of rock layers due to stress
Two main types of folds:
Anticlines- upward arching folds
Synclines- downward
troughlike folds

9. Fault Model
Answer all questions in complete sentences