1. Sci. 4-4
Deforming the Earth’s Crust
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2. Stress- the amount of force per unit area that is put on a given material
Deformation- the change in the shape of the rock in response to stress

3. C. Compression- squeezed together
D. Tension- being stretched

4. E. Folding- rock layers bend due to stress
1) anticline
2)synclines
3) monocline- if both ends of a fold are still horizontal after folding

5. F. Faulting- when rocks break and slide past each other
1)footwall
2)hanging wall
3) normal fault- the hanging wall moves down- tension

6. 4) Reverse fault- the hanging wall moves up- compression
5) Strike-slip fault- occurs when opposing forces cause rock to break and move horizontally

7. G. Mountain building is caused by plates moving and bumping into each other

8. 1) folded mountains- 2 rock layers squeeze together and push up

9. 2) fault-block mountains- when faulting causes large blocks of Earth’s crust to drop down relative to other blocks.

10. 3) Volcanic Mountains- when molten rock erupts onto the Earth’s surface