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Forces in the Earth – Faults!

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Presentation on theme: "Forces in the Earth – Faults!"— Presentation transcript:

1 Forces in the Earth – Faults!
Physical Science Notes 10/4/2012

2 Faults Definition: a fault is a fracture in the Earth where rock movement occurs. This can happen either on the surface or deep beneath the Earth’s surface. Faults occur at tectonic plate boundaries Fault 2

3 Faults Fault There are three types of plate boundaries:
Convergent: plates pushed together by compression forces Divergent: plates pulled apart by tension forces Transform: plates sliding past each other with shearing forces Fault 3

4 Faults Normal Fault Definition: A normal fault is a fault caused by tension forces at a divergent plate boundary. As a result, rock above the fault moves downward relative to rock below the fault surface. 4

5 Faults Reverse Fault Definition: A reverse fault is a fault caused by compression forces at a convergent plate boundary. As a result, rock above the fault moves upward relative to rock below the fault surface. 5

6 Faults Strike-Slip Fault
Definition: A strike-slip fault is a fault caused by shearing forces at a transform plate boundary. 6

7 Summarize! After you summarize, you may begin the homework assignment (summarizing and illustrating each type of plate boundary: convergent, divergent, and transform)

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