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Plate Boundaries, Stresses, Faults Name: _________________________________ Date: _________ Class: _________ Remember: The Lithosphere is made of crust + upper rigid mantle & plates may be called crustal, lithospheric and/or tectonic plates Boundary Type: Stress: Fault: How/Where does it happen? (draw arrows) How is the rock pushed, pulled or changed? How does the rock break after it is stressed? Divergent Boundary Tension Stress Normal Fault Place where 2 plates pull away from each other Rock gets _________ in the middle as it is _______________ apart Rock ___________ down as it breaks (fault is at an angle, so 1 block lies above the fault {foot wall} & 1 block lies below the faults {hanging wall}) Geologic Feature OR Event: What happens as a result of the plate movement? May form ________ ____________ on continents (Ex: Rio Grande in NM) Earthquakes may occur or volcanoes may form where magma reaches the surface) OR ___________________ ___________________ in the ocean (magma/lava “bubbles” Hints: To help remember or make the connection… Dissecting Dividing Pulling warm bubble gum or silly putty apart until it breaks Happens @ different places on Land & H2O up through breaks in the crust) Convergent Boundary Compression Stress Reverse Fault Place where 2 plates crash/crunch together Rock is pressed or ___________________ ___________________ Rock is forced __________ as it breaks (hanging wall & foot wall are OPPOSITE from Normal Fault) Transform Boundary Shearing Stress Strike-Slip Fault Place where 2 plates slide past each other Rock is pushed in two ___________________ ___________________ or sideways Rocks on each side of the fault _______________ ___________________ _____________ as they break May form _____________________ ______________ (folded mtns = Rockies & Himalayas) May form _______________ @ Subduction Zones (as denser oceanic plate dives under less dense continental plate) May cause _______________________ (when rock snaps from the pressure build up, Ex: San Andreas Fault in CA) Connecting Trash compactor Mountain Ranges = Rock goes up Subduction = Submarines Sub stem“under” Trains going past each other in different directions, shake the ground Rock is “sheared” or cut “Shears” = Scissors