1. FALCON FOCUS
Examine the model and answer the following questions:
Which type of plate boundary is being shown?
Which types of crust are interacting at this boundary?
What land form is being created?

2. Mountain Building Forces and Faults
Mountains are built in many different ways.
We’ve learned that through the movement and interaction of tectonic plates.
Different forces create different kinds of mountains.

3. Building Mountains
Forces (stresses) that cause rocks to break or move are:
1. Tension
2. Compression
3. Shearing
These forces cause the lithosphere to bend and stretch

4. These stresses can be strong enough to cause rocks to break
This creates
FAULTS: a fracture/break in Earth’s lithosphere
Earthquakes occur along faults when these rocks move

5. South Carolina Faults
Where those lines are is where mountains occur so that’s where the faults are

6. Tension forces Tension: forces that pull rocks apart
Occurs at Divergent boundaries
Tension stretches rock
*Creates a normal fault*
If a normal fault uplifts a large block of rock, a fault-block mountain forms

7. Normal Fault Footwall: goes up
Hanging Wall: falls down, hangs over, you can hang from it

8. Normal Faults
Fault-block mountains
Normal fault in Death Valley, CA

9. Compression Forces
Compression: forces that push or squeeze rocks together
Occurs along continental convergent boundaries
Rock folds or breaks
Creates reverse faults
Layers of rock different colors bc they’re different ages

11. Compression can produce mountain ranges
If pressure is applied slowly, folded mountains form

12. Himalayan Mtns.
Appalachian Mtns.
Rocky Mtns. Of Wyoming

13. Shearing Forces
Shearing: forces that cause rocks on either side of faults to push in opposite directions
Causes rock to break and split apart
Creates strike-slip faults
Is the RESULT of a transform boundary when the rocks move
Earthquakes happen as the plates move, strike-slip fault created as a result