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Tectonic Plates

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carver
19 diapositives · 765 Views · Sep 28, 2014

Tectonic Plates. Directions:. Use this PowerPoint to guide you through making your illustrations and information for your notes page. When you finish your notes page, write and answer the review questions at the end of the PowerPoint in your CNB. Plate Tectonics.

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Tectonic Plates
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  1. Tectonic Plates

  2. Directions: • Use this PowerPoint to guide you through making your illustrations and information for your notes page. • When you finish your notes page, write and answer the review questions at the end of the PowerPoint in your CNB.

  3. Plate Tectonics • Greek – “tektonikos” of a builder • Pieces of the lithosphere that move around • Each plate has a name • Fit together like jigsaw puzzles • Float on top of mantle similar to ice cubes in a bowl of water

  4. Continental Drift Alfred Wegener 1900’s Continents were once a single land mass that drifted apart. Fossils of the same plants and animals are found on different continents Called this supercontinent Pangea, Greek for “all Earth” 245 Million years ago Split again – Laurasia & Gondwana 180 million years ago http://members.enchantedlearning.com/subjects/astronomy/planets/earth/Continents.shtml

  5. Evidence of Pangea

  6. Sea Floor Spreading

  7. Sea Floor Spreading • Mid Ocean Ridges – underwater mountain chains that run through the Earth’s Basins • Magma rises to the surface and solidifies and new crust forms • Older Crust is pushed farther away from the ridge

  8. How Plates Move http://pubs.usgs.gov/gip/dynamic/unanswered.html

  9. Different Types of Boundaries http://pubs.usgs.gov/gip/dynamic/understanding.html

  10. Divergent Boundary – Arabian and African Plates Arabian Plate Red Sea African Plate

  11. Divergent Boundary – Iceland http://pubs.usgs.gov/gip/dynamic/understanding.html

  12. Divergent Boundary - Oceanic Click here to discover the type of land formation created

  13. Divergent Boundary - Continental Click here to discover the type of land formation created

  14. Convergent Boundary – Indian and Eurasian Plates Eurasian Plate Indian Plate

  15. Convergent Boundary – Oceanic & Continental Click here for land formations http://pubs.usgs.gov/gip/dynamic/understanding.html & http://www.geology.com

  16. Convergent Boundary – Oceanic & Oceanic Note – plates are reversed Click here for land formations http://pubs.usgs.gov/gip/dynamic/understanding.html & http://www.geology.com

  17. Convergent Boundaries - Continental Click here for land formations http://pubs.usgs.gov/gip/dynamic/understanding.html & http://www.geology.com

  18. Transform Boundary – San Andreas Fault Click here for results of transform boundaries

  19. ReviewComplete this review when you finish your notes and illustrations page. • Name the 3 main layers of the Earth. • Which layer makes up most of the Earth’s mass/size? • What is a tectonic plate? • What was Pangea? • What is Sea-Floor spreading? • Name the three different main types of plate boundaries and one location on Earth for each one.