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Plate Techtonics and Plate Boundaries Direct Instruction Guided Notes _____________ _______________ is the process where land masses have pulled apart and joined together. Earth’s _________ is divided into ____ major plates which are moved in various directions. This motion causes them to _____________, ______ _________, or ___________ against each other. Each type of interaction causes a characteristic set of Earth structures or ________________ features. o _____________ refers to the deformation of the crust as a consequence of plate interaction. Techtonic plates are made of rigid __________________. o The lithosphere is made up of the ____________ and the __________ part of the _____________ o Below the lithosphere is the ________________________. Remember that the mantle is made up of 1-5% liquid which allows it to flow easily (like jello). Plate Boundaries Occur when plates ____________ o _______________________ Boundary occurs when plates move __________ from each other Spreading Ridges----as plates move apart, _______ ___________ material can _______ ____ to fill the gap, causing ______________ activity. o _______________________ Boundary occurs when plates move __________ from each other 3 types: ___________________________________________________ o Forms ______________________ _________________________________________________ o Called _______________________ Oceanic lithosphere _______________ underneath the continental lithosphere. Oceanic lithosphere _________ and dehydrates as it subsides. The melt ___________ forming ______________. _________________________________________________ o When _______ oceanic plates collide, one runs over the other which causes it to sink into the mantle forming a ____________________ _____________ o The subducting plate is _______ __________________ to form a very deep depression in the ocean floor called a ______________. o _______________________ Boundary occurs when plates __________ _________ each other ___________________ are formed by: ______________________, _______________, ____________________ o Subduction- The subducting slab ________________ to form new melt that will rise up through the ___________ to be erupted at the surface. o Rifting- When two plates pull apart magma rises, producing ____________ eruptions at the surface. o Hotspots- do _______ necessarily occur along a plate boundary. This occurs when hot ___________ plumes breaching the surface in the middle of a techtonic plate. _______________ typically form between plates. o Friction causes the plates to stick together, then built up _________ causes them to break.