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Name/Date: 6 Science WYNTK – Forces in Earth’s Crust Stress: Types of Stress Three types of stress can occur in the crust Tension, compression and shearing work over But if you could speed up time so a billion years passed by in minutes, Tension: The effect of tension on rock is somewhat like Compression: One plate pushing against another can Shearing: Shearing can cause rock to Kinds of Faults Recall that a fault is Most faults occur along There are three main types of faults: Normal faults: In a normal fault, the fault is at an Hanging wall: Footwall: When movement occurs along a normal fault, the Reverse fault: The rock forming the hanging wall of a reverse fault slides Strike-slip fault: A strike-slip fault that forms the boundary between The San Andreas fault in California is an Changing Earth’s Surface Over millions of years, the forces of plate movement can change a flat plain into Folds are bends in that form Anticline: Syncline: Anticlines and synclines are found in many When two normal faults cut through a When two of these normal faults form parallel to Plateau: Forces deforming the crust uplifted the