1. Science *Stack Test Corrections for collection
Do Now: 12-2
HW: STUDY TODAY’S NOTES – QUIZ THURSDAY
WORK ON PLATE TECTONIC PROJECT
1. LIST THE THREE TYPES OF PLATE BOUNDARIES AND SHOW THEIR MOVEMENT WITH ARROWS.
Today
~ Power Point w/notes: Deformation of the Earth’s Crust

2. Deforming the Earth’s Crust

3. Types of Stress Compression Tension Shearing
Deformation: When the shape of a rock changes due to stress
Compression = squeezing or pushing together (convergent boundaries)
Tension = forces stretch an object (divergent boundaries)
Shearing = slicing motion back and forth (transform boundaries)
Compression
Tension
Shearing

4. Types of Folding Folding: rock layers bending because of stress
Anticline = upward bend
Syncline = downward bend
Monocline = bend with horizontal ends

5. Types of Faulting
Fault: the surface along which rocks break and slide past each other
Hanging wall: the layers of rock ABOVE the fault line (…above the diagonal)
Footwall: the layers of rock BELOW the fault line (…below the diagonal)
HANGING WALL
Fault Line
FOOTWALL

6. Hanging Wall and Footwall
How can I remember which is which???

7. Types of Faults “It’s Normal to Hang Down.”
Normal Faults = the hanging wall slides down the foot wall
Reverse Fault = the hanging wall slides up the foot wall
Strike slip Fault = the rocks on either side of the fault line slide past each other
“It’s Normal to Hang Down.”

8. Folded Mountains
COMPRESSION…mountains formed at continental/continental convergent boundaries.
Ex. Appalachian Mountains
Appalachian Mtns.
COMPRESSION

9. Fault Block Mountains
TENSION…causes large blocks of the Earth’s crust to drop down compared to the rocks around it.
Ex. Tetons (Wyoming)
TENSION

10. Volcanic Mountains
Formed at Ocean/Continental and Ocean/Ocean Convergent boundaries.
Ex. Ring of Fire
Ring of Fire
Mount Saint Helens

11. You’ve seen this before!...
NORMAL FAULT
ANTICLINE
SYNCLINE