Presentation on theme: "Plate tectonics 6.E 2.2 Kim Lachler 2011. Plate tectonics theory The Earth's crust is made up of plates. These plates have moved throughout Earth's history."— Presentation transcript:
Plate tectonics 6.E 2.2 Kim Lachler 2011
Plate tectonics theory The Earth's crust is made up of plates. These plates have moved throughout Earth's history. – Used to explain the formation of Mountains Volcanoes Earthquakes Oceans basins
Pangaea Was when all the continents where together 2000 years ago. Different theories exist as to why they spread.
Types of Boundary Movements 1) Divergent - moves apart - when theyhappen in the ocean –ocean basins are formed.
Types of Boundary Movements 2) Convergent - moves together Where ocean meets land – can form volcanoes Where land meets land – can form mountains
Types of Boundary Movements 3) Transform - slide past - most (but not all) are in ocean basins
Movement Each plate moves as an individual unit – Cities located on the same plate stay the same distance apart. – Cities located on different plates distances change.
Bibliography PBS, Intro to Plate Tectonic Theory, accessed 10/05/2011http://www.pbs.org/wgbh/aso/tryit/tectonics/intro.html Geology,.com, divergent boundries, accessed 10/05/2011http://geology.com/nsta/divergent-plate-boundaries.shtml Geology.com, transform boundries, accessed 10/05/2011http://geology.com/nsta/divergent-plate-boundaries.shtml Earth Exploration Tool Kit,Case Study: Investigating Earthquake Activity- Predicting the Next Big One! accessed 10/05/2011http://serc.carleton.edu/eet/earthquakes/case_study.html